81_FR_1909 81 FR 1900 - Endangered and Threatened Wildlife and Plants; 4(d) Rule for the Northern Long-Eared Bat

81 FR 1900 - Endangered and Threatened Wildlife and Plants; 4(d) Rule for the Northern Long-Eared Bat

DEPARTMENT OF THE INTERIOR
Fish and Wildlife Service

Federal Register Volume 81, Issue 9 (January 14, 2016)

Page Range1900-1922
FR Document2016-00617

We, the U.S. Fish and Wildlife Service (Service), finalize a rule under authority of section 4(d) of the Endangered Species Act of 1973 (Act), as amended, that provides measures that are necessary and advisable to provide for the conservation of the northern long-eared bat (Myotis septentrionalis), a bat species that occurs in 37 States, the District of Columbia, and 13 Canadian Provinces.

Federal Register, Volume 81 Issue 9 (Thursday, January 14, 2016)
[Federal Register Volume 81, Number 9 (Thursday, January 14, 2016)]
[Rules and Regulations]
[Pages 1900-1922]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-00617]


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DEPARTMENT OF THE INTERIOR

Fish and Wildlife Service

50 CFR Part 17

[Docket No. FWS-R5-ES-2011-0024; 4500030113]
RIN 1018-AY98


Endangered and Threatened Wildlife and Plants; 4(d) Rule for the 
Northern Long-Eared Bat

AGENCY:  Fish and Wildlife Service, Interior.

ACTION: Final rule.

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SUMMARY: We, the U.S. Fish and Wildlife Service (Service), finalize a 
rule under authority of section 4(d) of the Endangered Species Act of 
1973 (Act), as amended, that provides measures that are necessary and 
advisable to provide for the conservation of the northern long-eared 
bat (Myotis septentrionalis), a bat species that occurs in 37 States, 
the District of Columbia, and 13 Canadian Provinces.

DATES: This rule is effective February 16, 2016.

ADDRESSES: This final 4(d) rule, the final environmental assessment, 
biological opinion, and list of references are available on the 
Internet at http://www.regulations.gov under Docket No. FWS-R5-ES-2011-
0024 and at http://www.fws.gov/midwest/Endangered. Comments and 
materials we received, as well as supporting documentation we used in 
preparing this final 4(d) rule, are available for public inspection at 
http://www.regulations.gov, and by appointment, during normal business 
hours at: U.S. Fish and Wildlife Service, Twin Cities Ecological 
Services Field Office, 4101 American Blvd. East, Bloomington, MN 55425; 
telephone (612) 725-3548, ext. 2201; or facsimile (612) 725-3609.

FOR FURTHER INFORMATION CONTACT: Peter Fasbender, Field Supervisor, 
U.S. Fish and Wildlife Service, Twin Cities Ecological Services Field 
Office, 4101 American Blvd. East, Bloomington, MN 55425; telephone 
(612) 725-3548, ext. 2210; or facsimile (612) 725-3609. Persons who use 
a telecommunications device for the deaf (TDD) may call the Federal 
Information Relay Service (FIRS) at 800-877-8339.

SUPPLEMENTARY INFORMATION:

Executive Summary

    The need for the regulatory action and how the action will meet 
that need: Consistent with section 4(d) of the Act, this final 4(d) 
rule provides measures that are tailored to our current understanding 
of the conservation needs of the northern long-eared bat.
    On April 2, 2015, we published a document that is both a final rule 
to list the northern long-eared bat as a threatened species and an an 
interim 4(d) rule to provide measures that are necessary and advisable 
to provide for the conservation of the northern long-eared bat. At that 
time, we opened a 90-day public comment period on the interim rule, and 
we committed to publish a final 4(d) rule by December 31, 2015, and to 
complete review pursuant to the National Environmental Policy Act 
(NEPA). Previously, on January 16, 2015, we published a proposed 4(d) 
rule with a 60-day public comment period. Therefore,we have had two 
comment periods totaling 150 days on two versions of the 4(d) rule.
    Statement of legal authority for the regulatory action: Under 
section 4(d) of the Act, the Secretary of the Interior has discretion 
to issue such regulations she deems necessary and advisable to provide 
for the conservation of the species. The Secretary also has the 
discretion to prohibit by regulation, with respect to a threatened 
species, any act prohibited by section 9(a)(1) of the Act.
    Summary of the major provisions of the regulatory action: This 
final species-specific 4(d) rule prohibits purposeful take of northern 
long-eared bats throughout the species' range, except in instances of 
removal of northern long-eared bats from human structures, defense of 
human life (including public health monitoring), removal of hazardous 
trees for protection of human life and property, and authorized capture 
and handling of northern long-eared bats by individuals permitted to 
conduct these same activities for other

[[Page 1901]]

bats until May 3, 2016. After May 3, 2016, individuals who wish to 
capture and handle northern long-eared bats for recovery purposes will 
need a permit pursuant to section 10(a)(1)(A) of the Act.
    Incidental take resulting from otherwise lawful activities will not 
be prohibited in areas not yet affected by white-nose syndrome (WNS). 
WNS is a fungal disease affecting many hibernating U.S. bat species. 
Ninety- to one-hundred-percent mortality has been seen in bats affected 
by the disease in the eastern United States.
    Take of northern long-eared bats in their hibernacula (which 
includes caves, mines, and other locations where bats hibernate in 
winter) is prohibited in areas affected by WNS, unless permitted under 
section 10(a)(1)(A) of the Act. Take of northern long-eared bats inside 
of hibernacula may include disturbing or disrupting hibernating 
individuals when they are present as well as the physical or other 
alteration of the hibernaculum's entrance or environment when bats are 
not present if the result of the activity will impair essential 
behavioral patterns, including sheltering northern long-eared bats.
    For northern long-eared bats outside of hibernacula, we have 
established separate prohibitions from take for activities involving 
tree removal and activities that do not involve tree removal. 
Incidental take of northern long-eared bats outside of hibernacula 
resulting from activities other than tree removal is not prohibited. 
Incidental take resulting from tree removal is prohibited if it: (1) 
Occurs within a 0.25 mile (0.4 kilometer) radius of known northern 
long-eared bat hibernacula; or (2) cuts or destroys known occupied 
maternity roost trees, or any other trees within a 150-foot (45-meter) 
radius from the known maternity tree during the pup season (June 1 
through July 31). Incidental take of northern long-eared bats as a 
result of the removal of hazardous trees for the protection of human 
life and property is also not prohibited.
    Peer review and public comment: We sought comments on our proposed 
4(d) rule from independent specialists to ensure that this rule is 
based on scientifically sound data, assumptions, and analyses. We also 
considered all comments and information we received during the comment 
periods on the proposed and interim 4(d) rules.

Previous Federal Actions

    Please refer to the proposed (78 FR 61046; October 2, 2013) and 
final (80 FR17974; April 2, 2015) listing rules for the northern long-
eared bat for a detailed description of previous Federal actions 
concerning this species. On January 16, 2015, we published a proposed 
4(d) rule (80 FR 2371) for the northern long-eared bat and on April 2, 
2015, we published an interim 4(d) rule (80 FR 17974) for this species.

Background

    The northern long-eared bat is a wide-ranging species that is found 
in a variety of forested habitats in summer and hibernates in caves, 
mines, and other locations in winter. WNS is the main threat to this 
species and has caused a precipitous decline in bat numbers (in many 
cases, 90-100 percent) where the disease has occurred. Declines in the 
numbers of northern long-eared bats are expected to continue as WNS 
extends across the species' range. For more information on the northern 
long-eared bat, its habitat, and WNS, please refer to the October 2, 
2013, proposed listing (78 FR 61046) and the April 2, 2015, final 
listing (80 FR 17974) rules.
    The Act (16 U.S.C. 1531 et seq.) does not specify particular 
prohibitions, or exceptions to those prohibitions, for threatened 
species. Instead, under section 4(d) of the Act, the Secretary of the 
Interior has the discretion to issue such regulations as she deems 
necessary and advisable to provide for the conservation of such 
species. The Secretary also has the discretion to prohibit by 
regulation, with respect to any threatened wildlife species, any act 
prohibited under section 9(a)(1) of the Act with respect to endangered 
species. Exercising this discretion under section 4(d) of the Act, the 
Service developed general prohibitions (50 CFR 17.31) and exceptions to 
those prohibitions (50 CFR 17.32) under the Act that apply to most 
threatened wildlife species.
    In addition, for threatened species, under the authority of section 
4(d) of the Act, the Service may develop prohibitions and exceptions 
that are tailored to the specific conservation needs of the species. In 
such cases, some of the prohibitions and authorizations under 50 CFR 
17.31 and 17.32 may be appropriate for the species and be incorporated 
into a separate, species-specific, rule under section 4(d) of the Act. 
These rules will also include provisions that are tailored to the 
specific conservation needs of the threatened species and may be more 
or less restrictive than the general provisions at 50 CFR 17.31.

Definitions

    This final rule uses several definitions and provisions contained 
in the Act and its implementing regulations.
    The Act and its implementing regulations (50 CFR part 17) define 
take as harass, harm, pursue, hunt, shoot, wound, kill, trap, capture 
or collect, or to attempt to engage in any such conduct.
    The term ``harass'' (50 CFR 17.3) means an intentional or negligent 
act or omission which creates the likelihood of injury to wildlife by 
annoying it to such an extent as to significantly disrupt normal 
behavioral patterns which include, but are not limited to, breeding, 
feeding, or sheltering.
    The term ``harm'' (50 CFR 17.3) means an act which actually kills 
or injures wildlife. Such act may include significant habitat 
modification or degradation where it actually kills or injures wildlife 
by significantly impairing essential behavioral patterns, including 
breeding, feeding or sheltering.
    ``Purposeful take'' includes the capture and handling of individual 
bats. Take in this manner includes both capture and handling to remove 
bats from human structures and take that is for research purposes 
(e.g., attaching a radiotracking device). Other purposeful take would 
include intentional removal of bats from hibernacula or the intentional 
killing or harassing of bats under any circumstance.
    ``Human structures'' are defined as houses, garages, barns, sheds, 
and other buildings designed for human entry.
    ``Incidental take'' is defined at 50 CFR 17.3 as any taking 
otherwise prohibited, if such taking is incidental to, and not the 
purpose of, an otherwise lawful activity. Examples of incidental take 
(or non-purposeful take as it is sometimes referred to in this rule) 
include land-management actions, such as implementation of forestry 
practices, where bats may be harmed, harassed, or killed as a result of 
those otherwise lawful actions. The actions contemplated in this rule 
include a wide range of actions for purposes such as right-of-way 
development and maintenance, forestry, land use for development 
unrelated to wildlife management, management of lands as habitats other 
than bat habitat (e.g., prairie), energy production and transmission, 
and other activities.
    Incidental take within the context of this rule is regulated in 
distinct and separate manners relative to the geographic location of 
the activity in question. For the purposes of this rule, we have 
developed a map associated with the occurrence and spread of WNS. This 
map will be updated by the first of each month as the disease spreads 
throughout the range of the species and

[[Page 1902]]

posted at http://www.fws.gov/midwest/Endangered.
    ``Known hibernacula'' are defined as locations where northern long-
eared bats have been detected during hibernation or at the entrance 
during fall swarming or spring emergence.
    ``Known, occupied maternity roost trees'' are defined as trees that 
have had female northern long-eared bats or juvenile bats tracked to 
them or the presence of females or juveniles is known as a result of 
other methods.
    ``Tree removal'' is defined as cutting down, harvesting, 
destroying, trimming, or manipulating in any other way the trees, 
saplings, snags, or any other form of woody vegetation likely to be 
used by northern long-eared bats.

WNS Zone

    The WNS zone, as mapped, provides the boundary for the distinction 
of implementation of this rule. To estimate the area impacted by WNS, 
we have used data on the presence of the fungus causing the disease, 
called Pseudogymnoascus destructans, or Pd, or evidence of the presence 
of the disease (WNS) in the bats within a hibernaculum. Our final 
listing determination provides additional information concerning Pd and 
WNS (80 FR 17993; April 2, 2015). Confirmed evidence of infection at a 
location within a county is mapped as a positive detection for the 
entire county. In addition, we have added a 150-mile (241-kilometer 
(km)) buffer to the Pd-positive county line to account for the spread 
of the fungus from one year to the next. In instances where the 150-
mile (241-km) buffer line bisects a county, the entire county is 
included in the WNS zone.
    Over the past 5 years, an average of 96 percent of the new Pd or 
WNS counties in any single year were within 150 miles (241 km) of a 
county that was Pd- or WNS-positive in a prior year (Service 2015, 
unpublished data). Pd is generally present for a year or two before 
symptoms of WNS appear and mortality of bats begins to occur. Given the 
relatively short amount of time between detection and population-level 
impacts, it is important that we protect those buffer areas and the 
bats within them with the same regulations as those in known WNS 
positive counties. Therefore, the positive counties, plus a buffer 
around them, are the basis for the WNS zone map.

Summary Comparison of the Interim 4(d) Rule and This Final Rule

    Based on information we received in comment periods on the proposed 
and interim 4(d) rules (see Summary of Comments and Recommendations 
below), we revised the provisions of the interim 4(d) rule to better 
reflect the disproportionate effect that the disease, WNS, has had and 
will continue to have, we believe, on northern long-eared bat 
populations.
    In the interim rule, we used the term ``white-nose syndrome buffer 
zone'' to identify ``the portion of the range of the northern long-
eared bat'' within 150 miles (241 km) of the boundaries of U.S. 
counties or Canadian districts where the fungus Pseudogymnoascus 
destructans (Pd) or WNS had been detected. For purposes of 
clarification, in this final rule, we have changed the term ``white-
nose syndrome buffer zone'' to ``white-nose syndrome zone'' or ``WNS 
zone.'' And we state that the ``WNS zone'' is ``the set of counties 
within the range of the northern long-eared bat'' within 150 miles (241 
km) of the boundaries of U.S. counties or Canadian districts where Pd 
or WNS had been detected.
    The interim 4(d) rule generally applies the prohibitions of 50 CFR 
17.31 and 17.32 to the northern long-eared bat, which means that the 
interim rule, among other things, prohibits the purposeful take of 
northern long-eared bats throughout the species' range, but the interim 
rule includes exceptions to the purposeful take prohibition. The 
exceptions for purposeful take are: (1) In instances of removal of 
northern long-eared bats from human structures (if actions comply with 
all applicable State regulations); and (2) for authorized capture, 
handling, and related activities of northern long-eared bats by 
individuals permitted to conduct these same activities for other bat 
species until May 3, 2016. Under the interim rule, incidental take is 
not prohibited outside the WNS zone if the incidental take results from 
otherwise lawful activities. Inside the WNS zone, there are exceptions 
for incidental take for the following activities, subject to certain 
conditions: Implementation of forest management; maintenance and 
expansion of existing rights-of-way and transmission corridors; prairie 
management; minimal tree removal; and removal of hazardous trees for 
the protection of human life and property.
    This final 4(d) rule does not generally apply the prohibitions of 
50 CFR 17.31 to the northern long-eared bat. This rule continues to 
prohibit purposeful take of northern long-eared bats throughout the 
species' range, except in certain cases, including instances of removal 
of northern long-eared bats from human structures and for authorized 
capture, handling, and related activities of northern long-eared bats 
by individuals permitted to conduct these same activities for other bat 
species until May 3, 2016. After May 3, 2016, a permit pursuant to 
section 10(a)(1)(A) of the Act is required for the capture and handling 
of northern long-eared bats. Under this rule, incidental take is still 
not prohibited outside the WNS zone.
    We have revised the interim rule's language concerning incidental 
take inside the WNS zone. Under this final rule, within the WNS zone, 
incidental take is prohibited only if: (1) Actions result in the 
incidental take of northern long-eared bats in hibernacula; (2) actions 
result in the incidental take of northern long-eared bats by altering a 
known hibernaculum's entrance or interior environment if the alteration 
impairs an essential behavioral pattern, including sheltering northern 
long-eared bats; or (3) tree-removal activities result in the 
incidental take of northern long-eared bats when the activity either 
occurs within 0.25 mile (0.4 kilometer) of a known hibernaculum, or 
cuts or destroys known occupied maternity roost trees, or any other 
trees within a 150-foot (45-meter) radius from the maternity roost 
tree, during the pup season (June 1 through July 31). Take of northern 
long-eared bats in their hibernacula may include disturbing or 
disrupting hibernating individuals when they are in the hibernacula. 
Take of northern long-eared bat also includes the physical or other 
alteration of the hibernaculum's entrance or environment when bats are 
not present if the result of the activity will impair essential 
behavioral patterns, including sheltering northern long-eared bats. Any 
take resulting from otherwise lawful activities outside known 
hibernacula, other than tree removal, is not prohibited, as long as it 
does not change the bat's access to or quality of a known hibernaculum 
for the species. This final rule makes these revisions because, in 
areas impacted by WNS, the most important conservation actions for the 
northern long-eared bat are to protect bats in hibernacula and 
maternity roost trees, and to continue to monitor populations in summer 
habitat (e.g., identify where the species continues to survive after 
the detection of Pd or WNS and determine the factors influencing its 
resilience), while developing methods to abate WNS as quickly as 
possible.
    Under this rule, we individually set forth prohibitions on 
possession and other acts with unlawfully taken northern long-eared 
bats, and on import and export of northern long-eared bats. These 
prohibitions were included in the interim 4(d) through the general 
application of the prohibitions of 50 CFR 17.31 to the northern long-
eared bat. Under this rule, take of the northern

[[Page 1903]]

long-eared bat is also not prohibited for the following: Removal of 
hazardous trees for protection of human life and property; take in 
defense of life; and take by an employee or agent of the Service, of 
the National Marine Fisheries Service, or of a State conservation 
agency that is operating a conservation program pursuant to the terms 
of a cooperative agreement with the Service. Regarding these three 
exceptions, take in defense of life was not included in the interim 
4(d) rule, but the other two exceptions were, either through the 
general application of 50 CFR 17.31 or through a specific exception 
included in the interim 4(d) rule.

Provisions of the 4(d) Rule for the Northern Long-Eared Bat

    For a threatened species, the Act does not specify prohibitions, or 
exceptions to those prohibitions, relative to take of the species. 
Instead, under Section 4(d) of the Act, the Secretary has discretion to 
issue regulations deemed to be necessary and advisable for the 
conservation of a threatened species. By regulation, the Secretary has 
determined that take prohibitions for endangered species are also 
applicable to threatened species unless a special rule is issued under 
section 4(d) for a particular threatened species. Under this 4(d) rule, 
we have applied several of the prohibitions specified in the Act for 
endangered species and the provisions of 50 CFR 17.32 (permit 
regulations) to the northern long-eared bat as described below.
    For this 4(d) rule, the Service has completed a biological opinion 
under Section 7 of the Act on our action of finalizing this rule. In 
addition, the biological opinion provides for streamlined consultation 
for all federal agency actions that may affect the northern long-eared 
bat; therefore, the scope of the biological opinion included the 
finalization and implementation of the 4(d) rule. The biological 
opinion resulted in a non-jeopardy determination. Provided Federal 
action agencies follow the criteria outlined in this rule and implement 
the streamlined consultation process outlined in the biological 
opinion, their section 7 consultation requirements will be met. If 
unable to follow these criteria, standard section 7 procedures will 
apply.

Exceptions to the Purposeful Take Prohibition

    We have exempted the purposeful take of northern long-eared bats 
related to the protection of human health and safety. A very small 
percentage of bats may be infected with rabies or other diseases that 
can be transmissible to humans. When there is the possibility that a 
person has been exposed to a diseased bat, it is important that they 
coordinate with medical professionals (e.g., doctor, local health 
department) to determine the appropriate response. When warranted to 
protect human health and safety, we have exempted from the take 
prohibition of northern long-eared bats in defense of one's own life or 
the lives of others, including for public health monitoring purposes 
(i.e., collecting a bat after human exposure and submitting for disease 
testing).
    We have also exempted the purposeful take of northern long-eared 
bats related to removing the species from human structures, but only if 
the actions comply with all applicable State regulations. Northern 
long-eared bats have occasionally been documented roosting in human-
made structures, such as houses, barns, pavilions, sheds, cabins, and 
bat houses (Mumford and Cope 1964, p. 480; Barbour and Davis 1969, p. 
77; Cope and Humphrey 1972, p. 9; Amelon and Burhans 2006, p. 72; 
Whitaker and Mumford 2009, p. 209; Timpone et al. 2010, p. 119; Joe 
Kath 2013, pers. comm.). We conclude that the overall impact of bat 
removal from human structures is not expected to adversely affect 
conservation and recovery efforts for the species. In addition, we 
provide the following recommendations:
     Minimize use of pesticides (e.g., rodenticides) and avoid 
use of sticky traps as part of bat evictions/exclusions.
     Conduct exclusions during spring or fall unless there is a 
perceived public health concern from bats present during summer and/or 
winter.
     Contact a nuisance wildlife specialist for humane 
exclusion techniques.
    We have exempted the purposeful take that results from actions 
relating to capture, handling, and related activities for northern 
long-eared bats by individuals permitted to conduct these same 
activities for other species of bats until May 3, 2016. Under the 
interim rule, for a period of 1 year from the interim rule's effective 
date (May 3, 2016), we had exempted the purposeful take that is caused 
by the authorized capture, handling, and related activities (e.g., 
attachment of radio transmitters for tracking) of northern long-eared 
bats by individuals permitted to conduct these same activities for 
other bats. We have continued the exemption through the expiration date 
established by the interim rule. After May 3, 2016, a permit pursuant 
to section 10(a)(1)(A) of the Act is required for the capture and 
handling of northern long-eared bats,except that associated with bat 
removal from human structures. We determined that it was important to 
regulate the intentional capture and handling of northern long-eared 
bats through the Act's scientific permit process to help ensure that 
the surveyor's qualifications and methods used are adequate to protect 
individual bats and provide reliable survey results.

Incidental Take Outside of the WNS Zone Not Prohibited

    Incidental take in areas that have not yet been impacted by WNS 
(i.e., in areas outside the WNS zone) is not prohibited by this final 
rule. We believe the level of take associated with on-going land 
management and development actions, including all actions that may 
incidentally take the northern long-eared bat, do not individually or 
cumulatively affect healthy bat populations. As noted in our decision 
to list the northern long-eared bat as a threatened species, WNS is the 
primary cause of the species' decline, and we would not have listed the 
northern long-eared bat if not for the impact of WNS. In addition, we 
conclude that regulating incidental take in areas not affected by WNS 
is not expected to change the rate at which WNS progresses across the 
range of the species. In other words, regulating incidental take 
outside the WNS zone will not influence the future impact of the 
disease throughout the species' range or the status of the species. For 
these reasons, we have concluded that the prohibition of incidental 
take outside of the WNS zone is not necessary and advisable for the 
protection and recovery of the species. Incidental take, therefore, is 
not prohibited outside of the WNS zone.

Prohibitions and Exemptions Related to Incidental Take Inside the WNS 
Zone

    Our approach to designing the regulatory provisions for the 
northern long-eared bat inside the WNS zone reflects the significant 
role WNS plays as the central threat affecting the species. For other 
threatened species, habitat loss or other limiting factors usually 
contribute to the decline of a species. In these situations, 
regulations are needed to address either the habitat loss or the other 
limiting factors.
    The northern long-eared bat is not habitat-limited and has 
demonstrated a great deal of plasticity within its environment (e.g., 
living in highly fragmented forest habitats to contiguous forest blocks 
from the southern United States to Canada's Yukon Territory) in the 
absence of WNS. For the northern long-eared bat, land management and

[[Page 1904]]

development actions that have been on-going for centuries (e.g., forest 
management, forest conversion) have not been shown to have significant 
negative impacts to northern long-eared bat populations.
    As WNS continues to move across the range of the species, northern 
long-eared bat populations have declined and will continue to decline. 
Declines in northern long-eared bat populations in WNS-positive regions 
have been significant, and northern long-eared bats are now relatively 
rare on those landscapes. As populations decline as a result of WNS, 
the chances of any particular activity affecting northern long-eared 
bats becomes more remote. Therefore, in the WNS zone, we focused the 
regulatory provisions on sensitive life stages at known, occupied 
maternity roost trees and hibernacula.
    We developed regulations that provide some level of protection to 
the species where it persists in the face of WNS. However, we have 
provided flexibility so that the regulated public will seek to conserve 
the species and foster its recovery at sites where it has been lost 
should tools to address WNS become available or where the species shows 
signs of resilience. Further, because we believe recovery of this 
species will require many partnerships across the species' range, 
minimizing regulatory impacts on activities inconsequential to northern 
long-eared bat populations provides an important step in building 
partnerships for the species' recovery.
    The northern long-eared bat is a forest-dependent species, 
typically roosting in trees. In establishing regulations that are 
necessary and advisable for the conservation of the species, we have 
tailored species-specific regulatory provisions toward potential 
impacts to trees. For the incidental take of bats outside of 
hibernacula, we have specifically established two sets of provisions: 
the first set applies to activities that do not involve tree removal 
and the second applies to activities that do involve tree removal. By 
tree removal, we mean cutting down, harvesting, destroying, trimming, 
or manipulating in any other way the trees, saplings, snags, or any 
other form of woody vegetation that is likely to be used by the 
northern long-eared bat.
    In this final 4(d) rule, we have limited the prohibition of 
incidental take of northern long-eared bats to specific circumstances. 
This does not mean that all activities that could result in the 
incidental take of the northern long-eared bat will do so. The relative 
exposure of the species and the species response to a potential 
stressor are critical considerations in evaluating the potential for 
incidental take to occur. For example, under the discussion of tree 
removal, below, we describe what is prohibited by the final 4(d) rule 
in the WNS zone and provide examples of how other activities could be 
implemented in a way that avoids the potential for incidental take.

Hibernacula

    Northern long-eared bats predominantly overwinter in hibernacula 
that include caves and abandoned mines. For additional details about 
the characteristics of the hibernacula selected by northern long-eared 
bats, see the final listing determination (80 FR 17974; April 2, 2015). 
Northern long-eared bats have shown a high degree of philopatry (using 
the same site over multiple years) for a hibernaculum (Pearson 1962, p. 
30), although they may not return to the same hibernaculum in 
successive seasons (Caceres and Barclay 2000, p. 2).
    Hibernacula are so significant to the northern long-eared bat that 
they are considered a primary driver in the species distribution (e.g., 
Kurta 1982, p. 302). Northern long-eared bats are documented in 
hibernacula in 29 of the 37 states in the species' range. Other States 
within the species' range have no known hibernacula, which may reflect 
that no suitable hibernacula are present, a limited survey effort, or 
the northern long-eared bat's use of sites not previously identified as 
suitable.
    In general, bats select hibernacula because they have 
characteristics that allow the bats to meet specific life-cycle 
requirements. Factors influencing a hibernaculum's suitability include 
its physical structure (e.g., openings, interior space, depth), air 
circulation, temperature profile, and location relative to foraging 
sites (Tuttle and Stevenson 1978, pp. 108-121).
    Overwinter survival can be a particularly challenging period in the 
northern long-eared bat's life cycle. Hibernating bats appear to 
balance their physical condition (e.g., fat reserves upon entering 
hibernation), hibernacula characteristics (e.g., temperature variation, 
humidity), social resources (e.g., roosting singly or in groups), and 
metabolic condition (i.e., degree of torpor, which is the state of 
mental or physical inactivity) to meet overwinter survival needs. The 
overwinter physiological needs of the species include maintaining body 
temperature above freezing, minimizing water loss, meeting energetic 
needs until prey again become available, and responding to disturbance 
or disease. Because of this complex interplay of hibernacula 
characteristics and bat physiology, changes to hibernacula can 
significantly impact their suitability as well as the survival of any 
hibernating bats.
    In general, northern long-eared bats arrive at hibernacula in 
August or September, enter hibernation in October and November, and 
emerge from the hibernacula in March or April (Caire et al. 1979, p. 
405; Whitaker and Hamilton 1998, p. 100; Amelon and Burhans 2006, p. 
72). However, hibernation may begin as early as August (Whitaker and 
Rissler 1992b, p. 56). Northern long-eared bats have been observed 
moving among hibernacula throughout the winter (Griffin 1940a, p. 185; 
Whitaker and Rissler 1992a, p. 131; Caceres and Barclay 2000, pp. 2-3). 
Whitaker and Mumford (2009, p. 210) found that this species flies in 
and out of some mines and caves in southern Indiana throughout the 
winter.
    Human disturbance of hibernating bats has long been considered a 
threat to cave-hibernating bat species like the northern long-eared 
bat. Modifications to bat hibernacula can affect the microclimate 
(e.g., temperature, humidity) of the subterranean habitat, and thus the 
ability of the cave or mine to support hibernating bats, including the 
northern long-eared bat. Anthropogenic modifications to cave and mine 
entrances may not only alter flight characteristics and access (Spanjer 
and Fenton 2005, p. 1110), but may change airflow and alter internal 
microclimates of the caves and mines, eliminating their utility as 
hibernacula (Service 2007, p. 71). For example, Richter et al. (1993, 
p. 409) attributed the decline in the number of Indiana bats at 
Wyandotte Cave, Indiana (which harbors one of the largest known 
population of hibernating Indiana bats (Myotis sodalis)), to an 
increase in the cave's temperature resulting from restricted airflow 
caused by a stone wall erected at the cave's entrance. In addition to 
the direct access modifications to caves discussed above, debris 
buildup at entrances or on cave gates can also significantly modify the 
cave or mine site characteristics by restricting airflow and the course 
of natural water flow. Water-flow restriction could lead to flooding, 
thus drowning hibernating bats (Amelon and Burhans 2006, p. 72). Thomas 
(1995, p. 942) used infrared detectors to measure flight activity in 
hibernating northern long-eared bats and little brown bats in response 
to the presence of a human observer. Flight activity significantly 
increased with the presence of an observer, beginning within 30 minutes

[[Page 1905]]

of the visit, peaking 1.0 to 7.5 hours later, and remaining 
significantly above baseline level for 2.5 to 8.5 hours. These results 
suggest that hibernating bats are sensitive to non-tactile stimuli and 
arouse and fly following human visits. Boyles and Brack's (2009) model 
predicted that the survival rate of hibernating little brown bats drops 
from 96 percent to 73 percent with human visitations to hibernacula. 
Prior to the outbreak of WNS, Amelon and Burhans (2006, p. 73) 
indicated that ``the widespread recreational use of caves and indirect 
or direct disturbance by humans during the hibernation period pose the 
greatest known threat to [the northern long-eared bat].''
    Hibernacula and surrounding forest habitats play important roles in 
the life cycle of the northern long-eared bat beyond the time when the 
bats are overwintering. In both the early spring and fall, the 
hibernacula and surrounding forested habitats are the focus of bat 
activity in two separate periods referred to as ``spring staging'' and 
``fall swarming.''
    During the spring staging, bats begin to gradually emerge from 
hibernation, exit the hibernacula to feed, but re-enter the same or 
alternative hibernacula to resume daily bouts of torpor (Whitaker and 
Hamilton 1998, p. 100). The staging period for the northern long-eared 
bat is likely short in duration (Whitaker and Hamilton 1998, p. 100; 
Caire et al. 1979, p. 405). In Missouri, Caire et al. (1979, p. 405) 
found that northern long-eared bats moved into the staging period in 
mid-March through early May. In Michigan, Kurta et al. (1997, p. 478) 
determined that by early May, two-thirds of the Myotis species, 
including the northern long-eared bat, had dispersed to summer habitat.
    Beginning in mid to late summer, after their young have gained some 
level of independence, northern long-eared bats exhibit a behavior near 
hibernacula referred to as swarming. Both male and female northern 
long-eared bats are present at swarming sites (often with other species 
of bats). During this period, heightened activity and congregation of 
transient bats around caves and mines is observed, followed later by 
increased sexual activity and bouts of torpor prior to winter 
hibernation (Fenton 1969, p. 601; Parsons et al. 2003, pp. 63-64; Davis 
and Hitchcock 1965, pp. 304-306). The purposes of swarming behavior may 
include introduction of juveniles to potential hibernacula, copulation, 
and stopping over sites on migratory pathways between summer and winter 
regions (Kurta et al. 1997, p. 479; Parsons et al. 2003, p. 64; Lowe 
2012, p. 51; Randall and Broders 2014, pp. 109-110). The swarming 
season for some species of the genus Myotis begins shortly after 
females and young depart maternity colonies (Fenton 1969, p. 601). For 
the northern long-eared bat, the swarming period may occur between July 
and early October, depending on latitude within the species' range 
(Fenton 1969, p. 598; Kurta et al. 1997, p. 479; Lowe 2012, p. 86; Hall 
and Brenner 1968, p. 780; Caire et al. 1979, p. 405). The northern 
long-eared bat may investigate several cave or mine openings during the 
transient portion of the swarming period, and some individuals may use 
these areas as temporary daytime roosts or may roost in forest habitat 
adjacent these sites (Kurta et al. 1997, pp. 479, 483; Lowe 2012, p. 
51). Little is known about northern long-eared bat roost selection 
outside of caves and mines during the swarming period (Lowe 2012, p. 
6).
    Based on the importance of hibernacula to northern long-eared bats, 
take is prohibited in and around the hibernacula within the WNS zone, 
including activities that may alter the hibernacula at any time of the 
year. Further, we have determined that when the conservation measures 
for the northern long-eared bat included in this final 4(d) rule are 
applied to areas within 0.25 mile (0.4 km) of the hibernacula, the 
potential for negative impacts to individuals is significantly reduced.

Activities Not Involving Tree Removal Are Not Prohibited

    Under this final 4(d) rule, activities within the WNS zone not 
involving tree removal are not prohibited provided they do not result 
in the incidental take of northern long eared bats in hibernacula or 
otherwise impair essential behavioral patterns at known hibernacula. In 
our final listing determination (80 FR 17974; April 2, 2015), we 
identified a number of activities not involving tree removal that may 
have direct or indirect effects on northern long-eared bats. These 
activities have the potential to cause the incidental take of northern 
long-eared bats and include activities such as the operation of 
utility-scale wind-energy turbines, application of pesticides, and 
prescribed fire (this is not an exhaustive list; it is merely 
representative of activities that may result in take of northern long-
eared bats).
    At the time of our listing determination and the interim 4(d) rule 
(80 FR 17974; April 2, 2015), we stated that we had no compelling 
evidence that these activities would have significant effects on the 
northern long-eared bat when considered alone. However, we thought 
these factors may have a cumulative effect on this species when 
considered in concert with WNS. After additional consideration and our 
review of public comments received on the proposed and interim 4(d) 
rules, we did not find compelling evidence that regulating these 
potential cumulative effects would result in significant impacts at the 
species level. Effects to relatively small numbers of individuals are 
not anticipated to impair conservation efforts or the recovery 
potential of the species.

Wind-Energy Facilities

    Wind-energy facilities are found scattered throughout the range of 
the northern long-eared bat, and many new facilities are anticipated to 
be constructed over the next 15 years (United States Department of 
Energy 2008, unpaginated). We reviewed post-construction mortality 
monitoring studies conducted at various times from 1998 through 2014 at 
81 unique operating wind-energy facilities in the range of the northern 
long-eared bat in the United States and Canada (Service 2015, 
unpublished data). In these studies, 43 northern long-eared bat 
mortalities were documented at 19 of the sites. The northern long-eared 
bat fatalities comprised less than 1 percent of all documented bat 
mortalities. In most cases, the level of effort for most post-
construction monitoring studies is not sufficient to confidently 
exclude the possibility that infrequent fatalities are being missed, 
but finding none or only small numbers over many sites and years can 
suggest the order of what may be missed. Thus while sustained mortality 
at particular facilities could potentially cause declines in local 
populations of the northern long-eared bat, if that is in fact 
occurring, it does not appear to be wide-spread at least when compared 
to other bat species which are nearly always found in fatality 
monitoring at wind facilities. At those sites with a northern long-
eared bat fatality where multiple years of monitoring data were also 
available for review (n = 12), fatalities of northern long-eared bats 
were only reported in multiple years at two of the sites and for the 
other 10 sites only a single fatality was reported over multiple years 
of monitoring. For example, one site reported one northern long-eared 
bat fatality in 2008, but none in 2009, 2010, or 2011. Further, the 
number of fatalities of northern long-eared bats found at any given 
site has been relatively small (e.g., most often a single fatality was 
found, but in all cases no more than six), and typically most sites (62 
out of 81) found

[[Page 1906]]

no northern long-eared bat fatalities at all. There is a great deal of 
uncertainty related to extrapolating these numbers to generate an 
estimate of total northern long-eared bat mortality at wind-energy 
facilities due to variability in post-construction survey effort and 
methodology (Huso and Dalthorp 2014, pp. 546-547). Further, bat 
mortality can vary between years and between sites, and detected 
carcasses are only a small percentage of total bat mortalities. 
However, even with those limitations, northern long-eared bats were 
rarely detected as mortalities, even when they were known to be common 
on the landscape around the wind-energy facility.
    We recognize that several wind energy facilities have completed, or 
are currently working to complete, habitat conservation plans (HCPs; 
permit pursuant to section 10(a)(1)(B) of the Act) for other listed bat 
species where the number of fatalities reported is also very low. When 
the take of an endangered species is reasonably certain to occur, we 
recommend that a project proponent secure incidental take coverage 
pursuant to section 10 of the Act. Over the operational life of a wind 
energy facility (typically anticipated to be at least 20 to 30 years), 
the take of listed species may be reasonably certain to occur, even if 
the level of mortalities annually is anticipated to be quite low. 
However, this does not mean that prohibiting that incidental take in 
the case of a threatened species is necessary and advisable for the 
conservation of such a species. For the northern long-eared bat, we do 
not anticipate that the fatalities that will be caused by wind energy 
would meaningfully change the species' status in the foreseeable 
future.
    In addition, the wind industry has recently published best 
management practices establishing voluntary operating protocols, which 
they expect ``to reduce impacts to bats from operating wind turbines by 
as much as 30 percent'' (AWEA 2015, unpaginated). Given the large 
numbers of other bat species impacted by wind energy (Hein et al. 2013, 
p. 12) and the economic importance of bats in controlling agricultural 
or forest pest species (Boyles et al. 2011, pp. 41-42; Maine and 
Boyles, 2015, p. 12442), we anticipate that these new standards will be 
adopted by the wind-energy sector and ultimately required by wind-
energy-siting regulators at State and local levels. We recommend that 
wind facilities adopt these operating protocols.
    Our primary reason for not establishing regulatory criteria for 
wind-energy facilities is that the best available information does not 
indicate significant impacts to northern long-eared bats from such 
operations. We conclude that there may be adverse effects posed by 
wind-energy development to individual northern long-eared bats; 
however, there is no evidence suggesting that effects from wind-energy 
development has led to significant declines in this species, nor is 
there evidence that regulating the incidental take that is occurring 
would meaningfully change the conservation or recovery potential of the 
species in the face of WNS. Furthermore, with the adoption by wind-
energy facilities of the new voluntary standards, risk to all bats, 
including the northern long-eared bat, should be further reduced.

Environmental Contaminants

    Environmental contaminants, in particular insecticides, pesticides, 
and inorganic contaminants, such as mercury and lead, may also have 
detrimental effects on individual northern long-eared bats. However, 
across the wide-range of the species, it is unclear whether 
environmental contaminants, regardless of the source (e.g., pesticide 
applications, industrial waste-water), would be expected to cause 
population-level impacts to the northern long-eared bat either 
independently or in concert with WNS. Historically, the most 
intensively-studied contaminants in bats have been the organochlorine 
insecticides (OCs; O'Shea and Clark 2002, p. 238). During wide-spread 
use of OCs in the 1960s and 1970s, lethal pesticide poisoning was 
demonstrated in gray bats (Myotis grisescens), Mexican free-tailed bats 
(Tadarida brasiliensis), and Indiana bats (Myotis sodalis) (O'Shea and 
Clark 2002, p. 239, 242). Since the phasing out of OCs in the United 
States, the effects of chemical contaminants on bats have been less 
well studied (O'Shea and Johnston 2009, p. 501); however, a few recent 
studies have demonstrated the accumulation of potentially toxic 
elements and chemicals in North American bats. For instance, Yates et 
al. (2014, pp. 48-49) quantified total mercury (Hg) levels in 1,481 fur 
samples and 681 blood samples from 10 bat species captured across 8 
northeastern U.S. States and detected the highest Hg levels in tri-
colored bats (Perimyotis subflavus), little brown bats (Myotis 
lucifugus) and northern long-eared bats. More recently, Secord et al. 
(2015) analyzed tissue samples from 48 northeastern bat carcasses of 
four species, including northern long-eared bats, and detected 
accumulations of several contaminants of emerging concern (CECs), 
including most commonly polybrominated diphenyl ethers (PDBEs; 100 
percent of samples), salicylic acid (81 percent), thiabendazole (50 
percent), and caffeine (23 percent). Digoxigenin, ibuprofen, warfarin, 
penicillin V, testosterone, and N,N-diethyl-meta-toluamide (DEET) were 
also present in at least 15 percent of samples. Compounds with the 
highest concentrations were bisphenol A (397 ng/g), PDBE congeners 28, 
47, 99, 100, 153, and 154 (83.5 ng/g), triclosan (71.3 n/g), caffeine 
(68.3 ng/g), salicylic acid (66.4 ng/g), warfarin (57.6 ng/g), 
sulfathiazole (55.8 ng/g), tris(1-chloro-2-propyl) phosphate (53.8 ng/
g), and DEET (37.2 ng/g).
    Although there is the potential for direct and indirect 
contaminant-related effects, mortality or other population-level 
impacts have not been reported for northern long-eared bats. Long-term 
sublethal effects of environmental contaminants on bats are largely 
unknown; however, environmentally relevant exposure levels of various 
contaminants have been shown to impair nervous system, endocrine, and 
reproductive functioning in other wildlife (Yates et al. 2014, p. 52; 
K[ouml]hler and Triebskorn 2013, p. 761; Colborn et al. 1993, p. 378). 
Moreover, bats' high metabolic rates, longevity, insectivorous diet, 
migration-hibernation patterns of fat deposition and depletion, and 
immune impairment during hibernation, along with potentially 
exacerbating effects of WNS, likely increase their risk of exposure to 
and accumulation of environmental toxins (Secord et al. 2015, p. 411, 
Yates et al. 2014, p. 46, Geluso et al. 1976, p. 184; Quarles 2013, p. 
4, O'Shea and Clark 2002, p. 238). Following WNS-caused population 
declines in northeastern little brown bats, Kannan et al. (2010) 
investigated whether exposure to toxic contaminants could be a 
contributing factor in WNS-related mortality. Although high 
concentrations of polychlorinated biphenyls (PCBs), PBDEs, 
polybrominated biphenyls (PBBs), and chlordanes were found in the fat 
tissues of WNS-infected bats in New York, relative concentrations in 
bats from an uninfected population in Kentucky were also high (Kannan 
et al. 2010, p. 615). The authors concluded that the study's sample 
sizes were too small to accurately associate contaminant exposure with 
the effects of WNS in bats (Kannan et al. 2010, p. 618), but argued 
that additional research is needed. Despite the lack of knowledge on 
the effects of various contaminants on northern long-eared bats, we 
recognize the potential for direct and indirect consequences.

[[Page 1907]]

However, contaminant-related mortality has not been reported for 
northern long-eared bats. Additionally, Ingersoll (2013, p. 9) 
suggested it was unclear what other threats or combination of threats 
other than WNS (e.g., changes to critical roosting or foraging habitat, 
collisions, effects from chemicals) may be responsible for recent bat 
declines.

Prescribed Fire

    Prescribed fire is a useful forest-management tool. However, there 
are potential negative effects from prescribed burning, including 
direct mortality to the northern long-eared bat. Therefore, when using 
prescribed burning as a management tool, fire frequency, timing, 
location, and intensity all need to be considered to lower the risk of 
incidental take of bats. Carter et al. (2002, pp. 140-141) suggested 
that the risk of direct injury and mortality to southeastern forest- 
dwelling bats resulting from summer prescribed fire is generally low. 
During warm temperatures, bats are able to arouse from short-term 
torpor quickly. Northern long-eared bats use multiple roosts, switch 
roost trees often, and could likely use alternative roosts in unburned 
areas, should fire destroy the current roost. Non-volant pups are 
likely the most vulnerable to death and injury from fire. Although most 
eastern bat species are able to carry their young for some time after 
they are born (Davis 1970, pp. 187-189), the degree to which this 
behavior would allow females to relocate their young if fire threatens 
the nursery roost is unknown. The potential for death or injury 
resulting from prescribed burning depends largely on site-specific 
circumstances, e.g., fire intensity near the maternity roost tree and 
the height above ground of pups in the maternity roost tree. Not all 
fires through maternity roosting areas will kill or injure all pups 
present.
    Bats are known to take advantage of fire-killed snags and continue 
roosting in burned areas. Boyles and Aubrey (2006, pp. 111-112) found 
that, after years of fire suppression, initial burning created abundant 
snags, which evening bats (Nycticeius humeralis) used extensively for 
roosting. Johnson et al. (2010, pp. 115) found that after burning, male 
Indiana bats roosted primarily in fire-killed maples. In the Daniel 
Boone National Forest, Lacki et al. (2009, p. 5) radio-tracked adult 
female northern long-eared bats before and after prescribed fire, 
finding more roosts (74.3 percent) in burned habitats than in unburned 
habitats. Burning may create more suitable snags for roosting through 
exfoliation of bark (Johnson et al. 2009a, p. 240), mimicking trees in 
the appropriate decay stage for roosting bats. In addition to creating 
snags and live trees with roost features, prescribed fire may enhance 
the suitability of trees as roosts by reducing adjacent forest clutter. 
Perry et al. (2007, p. 162) found that five of six species, including 
northern long-eared bat, roosted disproportionately in stands that were 
thinned and burned 1 to 4 years prior but that still retained large 
overstory trees.
    The use of prescribed fire, where warranted, will, in any given 
year, impact only a small proportion of the northern long-eared bat's 
range during the bats active period. In addition, there are substantial 
benefits of prescribed fire for maintaining forest ecosystems. For 
example, the U.S. Forest Service's Southern Region manages 
approximately 10.9 million acres (4.4 million hectares (ha)) of land, 
and the maximum estimate of acres where prescribed fire is employed 
annually during the active period of northern-long eared bats (April 
through October) was 320,577 acres (129,732 ha), which is less than 3 
percent of the National Forest regional lands. Similarly, the Forest 
Service's Eastern Region manages 15 Forests in 13 States that include 
about 12.2 million acres (4.88 million ha), of which 11.3 million acres 
(4.52 million ha) are forested habitat. The U.S. Forest Service 
anticipates applying prescribed burning to 107,684 acres (43,073 ha) or 
about 1percent of the forested habitat across the eastern region 
annually. In addition, only 17,342 acres (6937 ha) (i.e., 0.15 percent 
of the forested habitat) of prescribed burning annually is anticipated 
to occur during the non-volant period on the eastern forests.
    Further, there are substantial benefits of prescribed fire for 
maintaining forest ecosystems, such as providing the successional and 
disturbance processes that renew the supply of suitable roost trees 
(Silvis et. al. 2012, pp.6-7), as well as helping to ensure a varied 
and reliable prey base (Dodd et. al. 2012, p. 269). There is no 
evidence that prescribed fire has led to population-level declines in 
this species nor is there evidence that regulating the incidental take 
that might occur would meaningfully change the conservation status or 
recovery potential of the species in the face of WNS.

Hazardous Tree Removal Is Not Prohibited

    Under this final 4(d) rule, incidental take that is caused by 
removal and management of hazardous trees is not prohibited. The 
removal of these hazardous trees may be widely dispersed, but limited, 
and should result in very minimal incidental take of northern long-
eared bats. We recommend, however, that removal of hazardous trees be 
done during the winter, wherever possible, when these trees will not be 
occupied by northern long-eared bats. We conclude that the overall 
impact of removing hazardous trees is not expected to adversely affect 
conservation and recovery efforts for the species.

Activities Involving Tree Removal

    We issued the interim species-specific rule under section 4(d) of 
the Act in recognition that WNS is the primary threat to the species' 
continued existence. We further recognized that all other (non-WNS) 
threats cumulatively were not impacting the species at the population 
level. Therefore, we apply the take prohibitions only to activities 
that we have determined may impact the species in its most vulnerable 
life stages, allowing for management flexibility and a limited 
regulatory burden.
    In this final 4(d) rule, we have determined that the conservation 
of the northern long-eared bat is best served by limiting the 
prohibitions to the most vulnerable life stages of the northern long-
eared bat (i.e., while in hibernacula or in maternity roost trees) 
within the WNS zone and to activities, tree removal in particular, that 
are most likely to affect the species. We have also revised some of the 
conservation measures. To further simplify the regulation, we have 
established separate prohibitions for activities involving tree removal 
and those that do not involve tree removal. Within the WNS zone 
incidental take outside of hibernacula that results from tree removal 
is only prohibited when it (1) Occurs within 0.25 miles (0.4 km) of 
known northern long-eared bat hibernacula; or (2) cuts or destroys 
known occupied maternity roost trees, or any other trees within a 150-
foot (45-meter) radius from the known occupied maternity trees, during 
the pup season (June 1 through July 31).

Forest Management

    Forest management maintains forest habitat on the landscape, and 
the impacts from management activities are, for the most part, 
temporary in nature. Forest management is the practical application of 
biological, physical, quantitative, managerial, economic, social, and 
policy principles to the regeneration, management, utilization, and 
conservation of forests to meet specified goals and objectives (Society 
of American Foresters, http://dictionaryofforestry.org/dict/term/
forest_

[[Page 1908]]

management). It includes a broad range of silvicultural practices and 
this discussion specifically addresses tree-removal practices (e.g., 
timber harvest) associated with forest management. Timber harvesting 
includes a wide variety of practices from selected removal of 
individual trees to clearcutting. Impacts to northern long-eared bats 
from forest management would be expected to range from positive (e.g., 
maintaining or increasing suitable roosting and foraging habitat within 
northern long-eared bat home ranges) to neutral (e.g., minor amounts of 
forest removal, forest management in areas outside northern long-eared 
bat summer home ranges, forest management away from hibernacula) to 
negative (e.g., death of adult females or pups or both resulting from 
the removal of maternity roost trees).
    The best available data indicate that the northern long-eared bat 
shows a varied degree of sensitivity to timber-harvesting practices. 
For example, Menzel et al. (2002, p. 112) found northern long-eared 
bats roosting in intensively managed stands in West Virginia, 
indicating that there were sufficient suitable roosts (primarily snags) 
remaining for their use. At the same study site, Owen et al. (2002, p. 
4) concluded that northern long-eared bats roosted in areas with 
abundant snags, and that in intensively managed forests in the central 
Appalachians, roost availability was not a limiting factor. Northern 
long-eared bats often chose black locust and black cherry as roost 
trees, which were quite abundant and often regenerate quickly after 
disturbance (e.g., timber harvest). Similarly, Perry and Thill (2007, 
p. 222) tracked northern long-eared bats in central Arkansas and found 
roosts were located in eight forest classes with 89 percent occurring 
in three classes of mixed pine-hardwood forest. The three classes of 
mixed pine-hardwood forest that supported the majority of the roosts 
were partially harvested/thinned, unharvested (50 to 99 years old), and 
group-selection harvested (Perry and Thill 2007, pp. 223-224).
    Certain levels of timber harvest may result in canopy openings, 
which could result in more rapid development of young bats. In central 
Arkansas, Perry and Thill (2007, pp. 223-224) found female bat roosts 
were more often located in areas with partial harvesting than males, 
with more male roosts (42 percent) in unharvested stands than female 
roosts (24 percent). They postulated that females roosted in relatively 
more open forest conditions because they may receive greater solar 
radiation, which may increase developmental rates of young or permit 
young bats a greater opportunity to conduct successful initial flights 
(Perry and Thill 2007, p. 224). Cryan et al. (2001, p. 49) found 
several reproductive and non-reproductive female northern long-eared 
bat roost areas in recently harvested (less than 5 years) stands in the 
Black Hills of South Dakota in which snags and small stems (diameter at 
breast height (dbh)) of 2 to 6 inches (5 to 15 centimeters) were the 
only trees left standing; however, the largest colony (n = 41) was 
found in a mature forest stand that had not been harvested in more than 
50 years.
    Forest size and continuity are also factors that define the quality 
of habitat for roost sites for northern long-eared bats. Lacki and 
Schwierjohann (2001, p. 487) stated that silvicultural practices could 
meet both male and female roosting requirements by maintaining large-
diameter snags, while allowing for regeneration of forests. Henderson 
et al. (2008, p. 1825) also found that forest fragmentation affects 
northern long-eared bats at different scales based on sex; females 
require a larger unfragmented area with a large number of suitable 
roost trees to support a colony, whereas males are able to use smaller, 
more fragmented areas. Henderson and Broders (2008, pp. 959-960) 
examined how female northern long-eared bats use the forest-
agricultural landscape on Prince Edward Island, Canada, and found that 
bats were limited in their mobility and activities are constrained when 
suitable forest is limited. However, they also found that bats in a 
relatively fragmented area used a building for colony roosting, which 
suggests an alternative for a colony to persist in an area with fewer 
available roost trees.
    In addition to impacts on roost sites, we considered effects of 
forest-management practices on foraging and traveling behaviors of 
northern long-eared bats. In southeastern Missouri, the northern long-
eared bat showed a preference for contiguous tracts of forest cover 
(rather than fragmented or wide open landscapes) for foraging or 
traveling, and different forest types interspersed on the landscape 
increased likelihood of occupancy (Yates and Muzika 2006, p. 1245). 
Similarly, in West Virginia, female northern long-eared bats spent most 
of their time foraging or travelling in intact forest, diameter-limit 
harvests (70 to 90 year-old stands with 30 to 40 percent of basal area 
removed in the past 10 years), and road corridors, with no use of 
deferment harvests (similar to clearcutting) (Owen et al. 2003, p. 
355). When comparing use and availability of habitats, northern long-
eared bats preferred diameter-limit harvests and forest roads. In 
Alberta, Canada, northern long-eared bats avoided the center of 
clearcuts and foraged more in intact forest than expected (Patriquin 
and Barclay 2003, p. 654). On Prince Edward Island, Canada, female 
northern long-eared bats preferred open areas less than forested areas, 
with foraging areas centered along forest-covered creeks (Henderson and 
Broders 2008, pp. 956-958). In mature forests in South Carolina, 10 of 
the 11 stands in which northern long-eared bats were detected were 
mature stands (Loeb and O'Keefe 2006, p. 1215). Within those mature 
stands, northern long-eared bats were more likely to be recorded at 
points with sparse or medium vegetation rather than points with dense 
vegetation, suggesting that some natural gaps within mature forests can 
provide good foraging habitat for northern long-eared bats (Loeb and 
O'Keefe 2006, pp. 1215-1217). However, in southwestern North Carolina, 
Loeb and O'Keefe (2011, p. 175) found that northern long-eared bats 
rarely used forest openings, but often used roads. Forest trails and 
roads may provide small gaps for foraging and cover from predators 
(Loeb and O'Keefe 2011, p. 175). In general, northern long-eared bats 
appear to prefer intact mixed-type forests with small gaps (i.e., 
forest trails, small roads, or forest-covered creeks) in forest with 
sparse or medium vegetation for forage and travel rather than 
fragmented habitat or areas that have been clearcut.
    Impacts to northern long-eared bats from forest management would be 
expected to vary depending on the timing of tree removal, location 
(within or outside northern long-eared bat home range), and extent of 
removal. While bats can flee during tree removal, removal of occupied 
roosts (during spring through fall) may result in direct injury or 
mortality to some percentage of northern long-eared bats. This 
percentage would be expected to be greater if flightless pups or 
inexperienced flying juveniles were also present. Forest management 
outside of northern long-eared bat summer home ranges or away from 
hibernacula would not be expected to affect the conservation of the 
species.
    Forest management is not usually expected to result in a permanent 
loss of suitable roosting or foraging habitat for northern long-eared 
bats. On the contrary, forest management is expected to maintain a 
forest over the long term for the species. However, localized temporary 
reductions in suitable roosting and/or foraging habitat can occur from 
various forest practices (e.g.,

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clearcuts). As stated above, northern long-eared bats have been found 
in forests that have been managed to varying degrees, and as long as 
there is sufficient suitable roosting and foraging habitat within their 
home range and travel corridors between those areas, we would expect 
northern long-eared bat colonies to continue to occur in managed 
landscapes. However, in areas with WNS, northern long-eared bats may be 
less resilient to stressors and maternity colonies are smaller. Given 
the low inherent reproductive potential of northern long-eared bats 
(one pup per female per year), death of adult females or pups or both 
during tree felling could reduce the long-term viability of some of the 
WNS-impacted colonies if they are also in the relatively small 
percentage of forest habitat directly affected by forest management.
    As we documented in the interim 4(d) rule, forestry management and 
silviculture are vital to the long-term survival and recovery of the 
species. Based on information obtained during comment periods, 
approximately 2 percent of forests in States within the range of the 
northern long-eared bat are impacted by forest management activities 
annually (Boggess et al., 2014, p.9). Of this amount, in any given 
year, a smaller fraction of forested habitat would be impacted during 
the active season when female bats and pups are most vulnerable. 
Therefore, we have determined that when the prohibitions for the 
northern long-eared bat included in this final 4(d) rule are applied to 
forest management activities, the potential impacts will be 
significantly reduced.

Forest Conversion

    In our listing determination for the northern long-eared bat, we 
noted that current and future forest conversion may have negative 
additive impacts where the species has been impacted by WNS (80 FR 
17991; April 2, 2015). Our assessment was based largely on the species' 
summer-home-range fidelity and the potential for increased energetic 
demands for individuals where the loss of summer habitat had been 
removed or degraded (e.g., fragmentation). We noted that forest 
conversion ``can result in a myriad of effects to the species, 
including direct loss of habitat, fragmentation of remaining habitat, 
and direct injury or mortality'' (80 FR 17993; April 2, 2015). In the 
interim 4(d) rule we exempted most forest-management activities except 
for the conversion of mature hardwood or mixed forest into intensively 
managed monoculture-pine plantation stands, or non-forested landscape 
(80 FR 18025; April 2, 2015).
    Many of the comments on the proposed and interim 4(d) rules noted 
that habitat is not limiting for the northern long-eared bat. As we 
documented in the final listing determination (80 FR 1802; April 2, 
2015), the extent of conversion from forest to other land cover types 
has been fairly consistent with conversion to forest (cropland 
reversion/plantings). Further, the recent past and projected amounts of 
forest loss to conversion was, and is anticipated to be, only a small 
percentage of the total amount of forest habitat. For example by 2060, 
4 to 8 percent of the forested area found in 2007 across the 
conterminous United States is expected to be lost (U.S Forest Service 
2012, p. 12). The northern long-eared bat has been documented to use a 
wide variety of forest types across its wide range. Therefore, we agree 
that the availability of forested habitat does not now, nor will it 
likely in the future, limit the conservation of the northern long-eared 
bat.
    We have determined that when the prohibitions for the northern 
long-eared bat included in this final 4(d) rule are applied to forest-
conversion activities, the potential for negative additive impacts to 
individuals or colonies is significantly reduced. As WNS impacts bat 
populations, unoccupied, suitable forage and roosting habitat will be 
increasingly available for remaining bats.

Tree-Removal Conservation Measures

    Under this final 4(d) rule, incidental take within the WNS zone 
involving tree removal is not prohibited if two conservation measures 
are followed. The first measure is the application of a 0.25 mile (0.4 
km) buffer around known occupied northern long-eared bat hibernacula. 
The second conservation measure is that the activity does not cut or 
destroy known occupied maternity roost trees, or any other trees within 
a 150-foot (45-m) radius around the maternity roost tree, during the 
pup season (June 1 through July 31). The rationale for these measures 
is discussed below.
Conservation Measure 1: Tree Removal Near Known Northern Long-eared Bat 
Hibernacula
    ``Known hibernacula'' are defined as locations where one or more 
northern long-eared bats have been detected during hibernation or at 
the entrance during fall swarming or spring emergence. Given the 
documented challenges of surveying for northern long-eared bats in the 
winter (use of cracks, crevices that are inaccessible to surveyors), 
any hibernacula with northern long-eared bats observed at least once, 
will continue to be considered ``known hibernacula'' as long as the 
hibernacula remains suitable for the northern long-eared bat. A 
hibernaculum remains suitable for northern long-eared bats even when Pd 
or WNS has been detected.
    We have adopted the 0.25-mile (0.4-km) buffer around known northern 
long-eared bat hibernacula for several reasons: (1) It will help to 
protect micro-climate characteristics of the hibernacula; (2) for many 
known hibernacula, bats use multiple entrances that may not be 
reflected in the primary location information (e.g., bats may use other 
smaller entrances that are often spread out from the main entrance 
accessed for surveys or other purposes) and the hibernacula may have 
extensive underground features that extend out from known entrances; 
(3) in the late summer and fall when bat behavior begins to center on 
hibernacula (swarming), it appears that northern long-eared bats may 
roost in a widely dispersed area, which may reduce the potential that 
any activity outside of this buffer would significantly affect the 
species; (4) outside of the maternity period, northern long-eared bats 
have demonstrated the ability to adapt to forest-management-related and 
other types of disturbances; and (5) regardless of the buffer size, 
bats will remain fully protected from take while in the hibernacula, 
when they are most vulnerable.
    The microclimate, temperature, humidity, and air and water flow 
within a hibernaculum are all important variables that could 
potentially be impacted by forest management or other activities when 
conducted in proximity to a hibernaculum. A 0.25-mile (0.4-km) buffer 
will protect the hibernaculum's microclimate. Studies that have 
evaluated the depth of edge influence from forest edge or tree removal 
on temperature, humidity, wind speed, and light penetration suggest 
that although highly variable among forest types and other site-
specific factors (such as aspect and season), the depth of edge 
influence can range from 164 feet (50 m) (Matlack 1993, p. 193) to over 
1,312 feet (400 m) (Chen et al. 1995, p. 83). However, the hibernacula 
often selected by northern long-eared bats are ``large, with large 
passages'' (Raesly and Gates 1987, p. 20), and may be less affected by 
relatively minor surficial micro-climatic changes that might result 
from the limited exempted activities outside of the 0.25-mile (0.4-km) 
buffer. Further, bats rarely hibernate near the entrances of structures 
(Grieneisen 2011, p. 10), as these areas can be subject to greater

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predation (Grieneisen 2011, p. 10; Kokurewicz 2004, p. 131) and daily 
temperature fluctuations (Grieneisen 2011, p. 10). Davis et al. (1999, 
p. 311) reported that partial clearcutting ``appears not to affect 
winter temperatures deep in caves.'' Caviness (2003, p. 130) reported 
that prescribed burns were found to have no notable influence on bats 
hibernating in various caves in the Ozark National Forest. All bats 
present in caves at the beginning of the burn were still present and in 
``full hibernation'' when the burn was completed, and bat numbers 
increased in the caves several days after the burn. There were minute 
changes in relative humidity and temperature during the burn, and 
elevated short-term levels of some contaminants from smoke were noted.
    Northern long-eared bat hibernacula can be large and complex and, 
spatially, may not be fully represented in locational information 
contained in species records by State or Federal agencies or by natural 
heritage programs. A 0.25-mile (0.4-km) buffer will help protect the 
spatial extent of many known hibernacula. For example, one limestone 
mine in Ohio used by northern long-eared bats had approximately 44 
miles (71 km) of passages and multiple entrances (Brack 2007, p. 740). 
In northern Michigan, bats (including northern long-eared bats) 
occupied mines that were more structurally complex and longer (1,007 ft 
 2,837 ft (307m  865 m) than mines that were 
unoccupied, and the occupied mines had a total length of passages that 
ranged from 33 feet to 4 miles (10 meters to 6.4 kilometers) (Kurta and 
Smith 2014, p. 592).
    Only a relatively small proportion of the areas where swarming 
northern long-eared bats may occur are likely to be affected by tree-
removal activity. There are over 1,500 known hibernacula for the 
species in the United States (Service 2015, unpublished data), several 
known in Canada, and potentially many others yet to be identified. Lowe 
(2012, p. 58) reported that the roosts of northern long-eared bats were 
evenly distributed over distances within 4.6 miles (7.3 km) from a 
swarming site. If the northern long-eared bat's potential swarming 
habitat (including foraging habitat during that period) can be 
approximated as the forest habitat within 5 miles (8.1 km) of 
hibernacula, that equates to a 50,265 acre (20,342 ha) area per 
hibernaculum. In any given year, only a small proportion of the forest 
habitat within the potential swarming habitat is likely to be impacted 
by tree-removal activities (e.g., generally 2 percent of forests are 
managed in any given year and over 1,500 hibernacula documented as used 
by the species). Similarly, forest conversion is anticipated to be 
relatively small compared to available habitat; therefore, based on our 
current understanding of potential swarming-habitat, on the scale of 
50,000 acres (20, 342ha) per hibernaculum, the relatively small foot-
print of activities not prohibited by this final rule are unlikely to 
affect the conservation or recovery potential of the species. Raesly 
and Gates (1987, p. 24) evaluated external habitat characteristics of 
hibernacula and reported that for the northern long-eared bat the 
percentage of cultivated fields within 0.6 miles (1 km) of the 
hibernacula was greater (52.6 percent) for those caves used by the 
species, than for those caves not used by the species (37.7 percent), 
suggesting that the removal of some forest around a hibernacula can be 
consistent with the species needs.
    Outside of the maternity period, northern long-eared bats have 
demonstrated the ability to respond successfully to forest-management-
related and other types of disturbances. Therefore, the limited 
disturbance associated with incidental-take exceptions outside of the 
0.25-mile (0.4-km) buffer on hibernacula is consistent with the 
conservation of the species. For example, Silvis et al.'s (2015, p.1) 
experimental removal of roosts suggested that the ``loss of a primary 
roost or 20 percent of secondary roosts in the dormant season may not 
cause northern long-eared bats to abandon roosting areas or 
substantially alter some roosting behaviors in the following active 
season when tree-roosts are used.''
    Prior to WNS, the most significant risk identified for northern 
long-eared bat conservation was direct human disturbance while bats are 
hibernating (e.g., Olson et al. 2011, p. 228; Bilecki 2003, p. 55; 
Service 2012, unpublished data). This final 4(d) rule (within the WNS 
zone) addresses these impacts.
    We have prohibited incidental take of northern long-eared bats 
under specific tree-removal circumstances; however, that does not mean 
that all activities involving tree-removal activities within the 0.25-
mile (0.4-k) buffer of hibernacula will result in take. For example, a 
timber harvest might be conducted within 0.25 miles (0.4 km) of a 
hibernaculum at a time when bats are unlikely to be roosting in trees 
within the buffer (e.g., winter), which fully protects any bats in the 
hibernaculum as well as the hibernaculum's suitability for bats (i.e., 
access, microclimate), and does not significantly change the 
suitability of the habitat for foraging by northern long-eared bats or 
perhaps even improves prey availability. In such a case, the timber 
harvest, although closer than 0.25 miles (0.4 km) to the hibernaculum, 
is not likely to result in incidental take so we would not recommend 
that the harvester seek authorization for incidental take pursuant to 
the Act. For activities planned within 0.25 miles (0.4 km) of 
hibernaculum, we encourage you to contact the local Ecological Services 
Field Office (http://www.fws.gov/offices) to help evaluate the 
potential for take of northern long-eared bats.
Conservation Measure 2: Tree Removal Near Known Maternity Roost Trees
    Female northern long-eared bats roost communally in trees in the 
summer (Foster and Kurta 1999, p. 667) and exhibit fission-fusion 
behavior (Garroway and Broders 2007, p. 961), where members frequently 
roost together (fusion), but the composition and size of the groups is 
not static, with individuals frequently departing to be solitary or to 
form smaller or different groups (fission) (Barclay and Kurta 2007, p. 
44). As part of this behavior, northern long-eared bats switch tree 
roosts often (Sasse and Pekins 1996, p. 95), typically every 2 to 3 
days (Foster and Kurta 1999, p. 665; Owen et al. 2002, p. 2; Carter and 
Feldhamer 2005, p. 261; Timpone et al. 2010, p. 119). In Missouri, the 
longest time spent roosting in one tree was 3 nights (Timpone et al. 
2010, p. 118). Bats switch roosts for a variety of reasons, including 
temperature, precipitation, predation, parasitism, sociality, and 
ephemeral roost sites (Carter and Feldhamer 2005, p. 264).
    Maternity colonies, consisting of females and young, are generally 
small, numbering from about 30 (Whitaker and Mumford 2009, p. 212) to 
60 individuals (Caceres and Barclay 2000, p. 3); however, one group of 
100 adult females was observed in Vermilion County, Indiana (Whitaker 
and Mumford 2009, p. 212) and Lereculeur (2013, p. 25) documented a 
colony of at least 116 northern long-eared bats. In West Virginia, 
maternity colonies in two studies had a range of 7 to 88 individuals 
(Owen et al. 2002, p. 2) and 11 to 65 individuals, with a mean size of 
31 (Menzel et al. 2002, p. 110). Lacki and Schwierjohann (2001, p. 485) 
found that the number of bats within a given roost declined as the 
summer progressed. Pregnant females formed the largest aggregations 
(mean=26) and post-lactating females formed the smallest aggregation 
(mean=4). Their largest overall reported colony size was 65 bats.

[[Page 1911]]

    Northern long-eared bats change roost trees frequently, but use 
roost areas repeatedly and to a lesser extent, reuse specific roosts 
(e.g., Cryan et al. 2001, p. 50; Foster and Kurta 1999, p. 665). The 
northern long-eared bat appears to be somewhat flexible in tree-roost 
selection, selecting varying roost tree species and types of roosts 
throughout its range. Females tend to roost in more open areas than 
males, likely due to the increased solar radiation, which aids pup 
development (Perry and Thill 2007, p. 224). Fewer trees surrounding 
maternity roosts may also benefit juvenile bats that are starting to 
learn to fly (Perry and Thill 2007, p. 224). Female roost-site 
selection, in terms of canopy cover and tree height, changes depending 
on reproductive stage; relative to pre- and post-lactation periods, 
lactating northern long-eared bats have been shown to roost higher in 
tall trees situated in areas of relatively less canopy cover and lower 
tree density (Garroway and Broders 2008, p. 91).
    The northern long-eared bat's tendency for frequent roost switching 
may help them avoid or respond effectively to disturbance by people 
outside of the maternity season. The frequent-roost-switching behavior 
of northern long-eared bat suggests that they are adapted to responding 
quickly to changes in roost availably (ephemeral roosts), changing 
environmental conditions (temperature), prey availability, or 
physiological needs (torpor, reproduction). In a study of radio-tracked 
northern long-eared bats responding to the disturbance from prescribed 
fire (Dickinson et al. 2009, pp. 55-57), the bats appeared ``to limit 
their exposure to conditions created by fire. At no point did they fly 
outside of their typical home range area, nor did they travel far from 
the burn itself.'' While some of the bats soon returned to areas 
recently burned, by day 6 and 7 post burn, they ``appeared to return to 
pre-burn norms in terms of emergence time, length of foraging bouts, 
and use of the burn unit and adjacent habitats.'' Carter et al. (2000, 
pp 139-140), noted that ``During the summer months, bats are able to 
arouse quickly as the difference between the ambient temperature and 
active body temperature of bats is less. Most bat species utilizing 
trees and snags have multiple roosts throughout the forest (Sasse and 
Pekins 1996; Callahan et al. 1997; Menzel et al. 1998; Foster and Kurta 
1999, Menzel et al. 2001), providing alternate roosts should the 
current roost be destroyed by fire.'' Sparks et al. (2008, pp. 207-208) 
documented that northern long-eared bats released in the open during 
the day demonstrated a successful rapid ``flight-to-cover'' response.
    Adult females give birth to a single pup (Barbour and Davis 1969, 
p. 104). Birthing within the colony tends to be synchronous, with the 
majority of births occurring around the same time (Krochmal and Sparks 
2007, p. 654). Parturition (birth) likely occurs in late May or early 
June (Caire et al. 1979, p. 406; Easterla 1968, p. 770; Whitaker and 
Mumford 2009, p. 213), but may occur as late as July (Whitaker and 
Mumford 2009, p. 213). Upon birth, the pups are unable to fly, and 
females return to nurse the pups between foraging bouts at night. In 
other Myotis species, mother bats have been documented carrying 
flightless young to a new roosting location (Humphrey et al. 1977, p. 
341). The ability of a mother to move young may be limited by the size 
of the growing pup. Juvenile volancy (flight) often occurs by 21 days 
after birth (Krochmal and Sparks 2007, p. 651; Kunz 1971, p. 480) and 
has been documented as early as 18 days after birth (Krochmal and 
Sparks 2007, p. 651). Prior to gaining the ability to fly, juvenile 
bats are particularly vulnerable to tree-removal activities. Based on 
this information, we have determined that the most sensitive period to 
protect pups at maternity roost trees is from June 1 through July 31 
(the ``pup season'').
    Known occupied maternity roost trees are defined as trees that have 
had female northern long-eared bats or juvenile bats tracked to them or 
the presence of female or juvenile bats is known as a result of other 
methods. Once documented, northern-long eared bats are known to 
continue to use the same roosting areas. Therefore, a tree will be 
considered to be a ``known, occupied maternity roost'' as long as the 
tree and surrounding habitat remain suitable for northern long-eared 
bats. The incidental take prohibition for known, occupied maternity 
roosts trees applies only during the during the pup season (June 1 
through July 31).
    In addition to protecting the known roosts, we have also included 
in this conservation measure avoiding the cutting or destroying of any 
other trees within a 150-foot (45-meter) radius from the known, 
occupied maternity roost tree during the pup season (June 1 through 
July 31). Leaving a buffer of other trees around the maternity roost 
tree will help to protect the roost tree from damage or destruction 
that may be caused by other nearby trees being removed as well as 
helping protect the roost tree from wind throw and micro-climate 
changes. O'Keefe (2009 p. 42) documented that a 39-foot (12-meter) 
buffer around a maternity roost tree during a harvest in May allowed 
the roost to be successfully used through late July and that one 
buffered tree was used 2 years in a row. We have adopted a standard for 
exception of take that is almost four times that which proved effective 
in this example, in order to better account for the variation in forest 
types used by the northern long-eared bat and a variety of slopes that 
might influence how large a buffer may need to be in order to prove 
effective. Roost trees used by northern long-eared bats are often in 
fairly close proximity to each other within the species' summer home 
range. For female northern long-eared bats, the mean distance between 
roosts was reported as 63m to 600m from a variety of studies published 
1996 through 2014 (Foster and Kurta 1999 p. 665; Cryan et al. 2001, p. 
46; Swier 2003, pp. 58-59; Jackson 2004, p. 89; Henderson and Broders 
2008, p. 958; Johnson et al. 2009, p. 240; Badin 2014, p. 76; Bohrman 
and Fecske, unpublished data). Further, within that data, the distance 
between roosts was reported as small as 5 meters in one study (Badin 
2014, p. 76) and 36 meters in another (Jackson 2004, p. 89). As Sasse 
1995, p. 23, noted ``some roost sites appeared to be 'clustered' 
together.'' Therefore, even this modest additional buffer may also 
protect other roosts trees used by female northern long-eared bats 
during the maternity period that have not yet been documented. In 
addition, because colonies occupy more than one maternity roost in a 
forest stand and individual bats frequently change roosts, in some 
cases a portion of a colony or social network is likely to be protected 
by multiple 150-foot buffers during the maternity season.
    Currently, since most States and natural heritage programs do not 
track roosts and many have not tracked any northern long-eared bat 
occurrences, we recognize that not all northern long-eared bat 
maternity roost sites are known. Therefore, this measure will not 
protect an unknown maternity roosts unless it falls under one of the 
buffers related to protecting a known roost or hibernaculum.
    Although not fully protective of every individual, the conservation 
measures identified in this final rule help protect maternity colonies. 
This final species-specific rule under section 4(d) of the Act provides 
the regulatory flexibility for certain activities to occur that have 
not been the cause of the species' imperilment, while allowing us to 
focus conservation efforts on WNS, promoting

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conservation of the species across its range.

Additional Prohibitions and Exceptions

    In this final 4(d) rule we carry forward other standard 
prohibitions and exceptions that are typically applied to threatened 
species and are currently applicable under the interim rule for the 
northern long-eared bat. These prohibitions included the possession of 
and other acts with unlawfully taken northern long-eared bats, as well 
as import and export. We also included standard exemptions, including 
all the permitting provisions of 50 CFR 17.32 and the exemption for 
employees or agents of the Service, of the National Marine Fisheries 
Service, or of a State conservation agency when acting in the course of 
their official duties to take northern long-eared bats covered by an 
approved cooperative agreement to carry out conservation programs.

Summary of Comments and Recommendations on the Proposed and Interim 
4(d) Rules

    The northern long-eared bat was listed as a threatened species 
under the Act, with an interim rule under section 4(d) of the Act, on 
April 2, 2015 (80 FR 17974). At that time, the Service invited public 
comments on the interim 4(d) rule for 90 days, ending July 1, 2015. The 
Service had already received comments for 60 days on its proposed 4(d) 
rule (80 FR 2371, January 16, 2015). In total, the Service received 
approximately 40,500 comments on the proposed and interim 4(d) rules. 
We discuss them below.

Peer Reviewer Comments

    1. Comment: Peer reviewer(s) commented that the 0.25-mile (radius) 
around hibernacula is an inadequate buffer. There were additional 
suggestions for alternative buffer distances as well as more detail on 
how activities might be limited within those buffers. A specific 
suggestion of a 1.6-mile buffer was made, with a statement that most 
forest practices could occur within the buffer provided that the trees 
were not completely removed (conversion). In addition, a suggestion of 
0.5-mile buffer was made.
    Our Response: We have revised the approach used in this final 4(d) 
rule to ensure that hibernating northern long-eared bats in the WNS 
zone are protected from incidental take independent of the buffer size 
used in the conservation measure. In addition, all northern long-eared 
bats both in and outside of the WNS zone are protected from purposeful 
take (e.g., killing or intentionally harassing northern long-eared 
bats), including while in the hibernacula where they are most 
vulnerable. We have retained the 0.25-mile buffer (0.25-mile radius 
around known hibernacula entrance/access points used by bats) to 
further protect the hibernaculum and associated forested habitat for 
several reasons (see discussion above under Conservation Measure 1: 
Tree Removal Near Known Northern Long-eared Bat Hibernacula). Some of 
the peer-reviewers recommended that within the hibernacula buffer that 
certain limited activities should be allowed (e.g., timber harvest that 
only removes a small percentate of the forest habitat when bats are not 
active). As discussed above under Conservation Measure 1: Tree Removal 
Near Known Northern Long-eared Bat Hibernacula, not all tree-removal 
activities within the buffer of hibernacula will result in take. For 
example, a timber harvest might be conducted within the buffer when 
bats are unlikely to be roosting in trees (e.g., winter) that fully 
protects any bats in the hibernaculum as well as the hibernaculum's 
suitability for bats (i.e., access, microclimate), and does not 
significantly change the suitability of the habitat for foraging by 
northern long-eared bats or perhaps even improves prey availability. In 
such a case, the timber harvest, although within the buffer, is not 
likely to result in incidental take so we would not recommend that the 
harvester seek authorization for incidental take pursuant to the Act. 
Because the buffer only applies to actions that result in incidental 
take of the northern long-eared bat, we determined that there was no 
need to attempt to exempt activities (e.g., a limited timber harvest) 
where incidental take is unlikely.
    2. Comment: Peer reviewer(s) commented that the WNS buffer zone 
should be removed and protections should occur throughout the range of 
the species.
    Our Response: We have established prohibitions on the purposeful 
take of northern long eared bats throughout the species range. However, 
because WNS is the most significant threat known to be imperiling the 
species, we have determined that in areas where WNS has not been 
detected, additional prohibitions are not warranted. We recognize that 
the WNS zone will change over time. We remain committed to regularly 
updating the WNS zone map as new information about the spread of the Pd 
fungus becomes known.
    3. Comment: Peer reviewer(s) commented that the WNS buffer zone 
should be expanded and/or changed to accommodate a more site-specific 
approach, based on proximity to hibernacula, for example.
    Our Response: We reevaluated the approach to the WNS zone in this 
final rule and determined that the 150-mile buffer used for the interim 
4(d) rule appears to be very effective in capturing counties where new 
Pd detections are reported, in particular when looking at the new 
occurrences over the last 5 years. For more details of this analysis, 
please see our discussion in the WNS Zone section of this rule.
    4. Comment: Peer reviewer(s) commented that the Service's 
definitions relative to forestry practices should be more precise and 
should use silviculture terminology.
    Our Response: We have revised the prohibitions to no longer use 
specific forestry practices or silviculture terminology. Take of the 
northern long-eared bat within the context of forest management is not 
prohibited provided that conservation measures to protect hibernacula 
and known maternity roost trees are implemented as described in this 
rule.
    5. Comment: Peer reviewer(s) recommended that the seasonal 
restrictions for the northern long-eared bat ``pup season'' be expanded 
and/or based on climate and geography within the species' range.
    Our Response: We recognize that in some areas or in some years the 
period when young northern long-eared bats are non-volant may be 
earlier or later than the June and July timeframe. The timing of when 
northern long-eared bats give birth is likely a complex interplay of a 
variety of factors affecting fetal development (e.g., condition of the 
mother, temperature, prey availability), and similar factors may also 
influence the time required for young to develop the ability to fly. In 
addition, a study in West Virginia documented that the peak pregnancy 
and lactation dates shifted post WNS (Francl et al. 2012, p. 36). 
However, looking across a variety of studies, the June and July 
timeframe appears to generally capture what is typically reported as 
the non-volant period for northern long-eared bats across much of their 
range within the United States. We have determined that a single 
timeframe for implementing the prohibition on maternity roost tree 
removal provides clarity for the regulated public. In addition, while 
it does not modify the incidental take prohibition established in these 
regulations, our local field offices may be able to provide more 
refined local estimates of the non-volant period for specific areas. 
Project planners may choose to use these local estimates for

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planning purposes where they are available.
    6. Comment: Peer reviewer(s) recommended year-round protections for 
maternity roost trees or conversely that we remove entirely the 
protections for maternity trees because it is ineffective and serves as 
a disincentive for conducting surveys.
    Our Response: Although northern long-eared bats have been 
documented to use some roost trees over multiple years, in many cases 
it is because the tree is dead or dying or has structural defects that 
provides the roosting features attractive to the species. Further, 
maternity roost trees are used only briefly (e.g., northern long-eared 
bats typically change roosts every few days, and only a relatively 
small percentage of those are used more than once in any one season). 
Given that maternity roosts trees are ephemeral on the landscape and 
used for very short periods of time in the active season, we determined 
that year-round protections for known, occupied maternity roost trees 
are not warranted. We considered removing the protections for known, 
occupied maternity roosts as recommended by another peer reviewer, but 
instead modify the protection so as to minimize the disincentive for 
conducting surveys. In developing this final rule, we kept protections 
for known, occupied maternity roosts for two reasons: (1) While it may 
be unlikely, in cases where a tree was about to be removed, but was 
known to be occupied by northern long-eared bats, they would have some 
protections while the young could not fly; and (2) we wanted known, 
occupied maternity roosts to be given consideration because they help 
to signal to project planners an area that is likely to be used by 
northern long-eared bats in the future (as this species has a high 
degree of site fidelity). We refined the protection for known, occupied 
maternity roosts to make it as practical to implement as possible in 
order to minimize the disincentive created for conducting surveys. Many 
forest managers implement similar types of relatively small seasonal 
buffers to protect other species of sensitive wildlife (e.g., around 
nesting raptors) and therefore we do not view this provision as a real 
disincentive to conducting surveys. Please see the Conservation Measure 
2: Tree Removal Near Known Maternity Roost Trees section of this rule 
for additional details. We believe that the seasonal restriction helps 
to protect the most vulnerable life stages, in this case the non-volant 
pups, and is adequate for the purposes of this rule.
    7. Comment: Peer reviewer(s) recommended that pregnant females 
should be protected as part of the seasonal restriction criteria.
    Our Response: We recognize that pregnant females may be in torpor 
or less able to flee in early spring. However, we did not have 
information on how pregnancy in northern long-eared bats influenced the 
degree of torpor or their ability to flee from disturbance. As 
discussed in this rule, we expect only a small percentage of the 
species' forested habitat to be affected by activities (e.g., tree 
removal, prescribed fire) that might impact a pregnant northern long-
eared bats in torpor and, therefore, we expect only small proportion of 
the species' population to be potentially exposed to these activities. 
Because of the relatively small exposure and uncertainty about how 
pregnancy affects degree of torpor or ability to flee, we have not 
expanded the seasonal protections for this purpose. We believe that 
seasonal restrictions help protect the vulnerable pup stage, when young 
pups cannot fly, and are adequate for the purposes of this rule.
    8. Comment: Peer reviewer(s) stated that the conservation efforts 
will not be effective because the natural heritage data are limited 
with respect to known maternity roost trees and hibernacula.
    Our Response: We agree that the data are limited and this can be 
challenging from the implementation and/or project planning 
perspective. However, we have purposefully limited protections where 
possible, to minimize the potential disincentive to continue to survey 
for the species. However, we anticipate that information in State 
natural heritage data bases will continue to improve post-listing.
    9. Comment: Peer reviewer expressed concern with allowing lethal 
take of northern long-eared bats from human dwellings.
    Our Response: We encourage the non-lethal removal of northern long-
eared bats from human structures, preferably by excluding them outside 
of the maternity period, whenever possible. However, because of the 
potential for human health considerations, we have not required this as 
part of the exception to the purposeful take prohibition. We have 
limited this take to houses, garages, barns, sheds, and other buildings 
designed for human entry.
Public Comments

General

    10. Comment: Commenters from many development sectors requested 
that their activities be included in the suite of exempted activities 
under the 4(d) rule (specific sectors addressed below).
    Our Response: In general, this final rule has been restructured to 
clarify prohibitions to take rather than to rely on a list of excepted 
activities. Prohibitions are applied in this final rule where necessary 
and advisable for the conservation of the species. Therefore, the 
various ``sectors'' do not need to be identified or ``excepted'' to 
apply rule provisions.

Forest Management

    11. Comment: Several commenters recommended that forest conversion 
be included as an excepted activity. Comments were specific to 
conversion of hardwood forests to pine plantations, managed pine 
forest, pine ecosystem, and the Service's characterization of pine 
stands as monoculture stands representing poor bat habitat.
    Our Response: Incidental take resulting from forest management, 
including forest conversion, is not a prohibited action pursuant to 
this final 4(d) rule provided conservation measures to protect known 
hibernacula and known, occupied maternity roost trees are employed. 
Please see sections above titled Forest Management and Forest 
Conversion.
    12. Comment: Commenters stated that forest management must occur to 
avoid habitat deterioration to poor quality bat habitat. They further 
stated that forest health depends upon active management including tree 
removal and clearcutting.
    Our Response: We agree that forest management can be very important 
in creating or maintaining forest successional patterns that help to 
ensure suitable trees are available for roosting northern long-eared 
bats. Further, forest management can help to increase prey availability 
or suitability of foraging habitat. Please see our discussion above 
under Forest Management for additional details. Incidental take 
resulting from forest management is not prohibited pursuant to this 
final 4(d) rule provided conservation measures to protect known 
hibernacula and known maternity roost trees are employed.
    13. Comment: Commenters suggested that the Service consider 
exemptions for sustainable forest practices implemented under a 
sustainable forest management plan or sustainable forestry certificate 
program.
    Our Response: We considered incorporating other possible 
conservation measures related to forest management and conversion. 
However, given the overall small percentage of the species' range 
potentially affected by

[[Page 1914]]

these activities in any given year, it was not clear that additional 
conditions related to incidental take from forest management or 
conversion would meaningfully change the conservation outlook for the 
species. Further, adding protections with uncertain benefits, but with 
large potential public impacts can hinder support for species 
conservation. Incidental take resulting from forest management is not 
prohibited pursuant to this final 4(d) rule provided conservation 
measures to protect known hibernacula and known, occupied maternity 
roost trees are employed.
    14. Comment: Commenters stated that the Service should focus on the 
elimination of WNS rather than regulating timber harvest in summer 
habitat.
    Our Response: Efforts to address the threat posed by WNS are on-
going by the Service and many partners across the species range. 
Incidental take resulting from forest management or forest conversion 
is not prohibited pursuant to this final 4(d) rule provided 
conservation measures to protect known hibernacula and known, occupied 
maternity roost trees are employed.
    15. Comment: A commenter stated that the Service should halt 
commercial timber harvest and another commenter suggested restricting 
the removal of snags and coarse woody debris in areas populated by the 
species.
    Our Response: The northern long-eared bat is not limited in terms 
of habitat availability for feeding, breeding, and sheltering in the 
summer (non-hibernating) months. Please see the discussions under 
Forest Management and Forest Conversion above in this rule. We have 
carefully considered the value of habitat protection for the species. 
We have determined that protection of summer habitat is not required 
for species conservation except where trees may be occupied by young, 
non-volant (flightless) pups and for areas immediately surrounding 
hibernacula where they swarm and feed just prior to hibernation and 
when they emerge from hibernation in the spring. Due to this swarming 
behavior and the vulnerability of bats when hibernating, we have 
determined that take prohibitions are necessary and advisable in winter 
habitat (hibernacula), where bats are subject to the effects of WNS. In 
addition, we have determined that protection of known, occupied 
maternity roost trees is necessary and advisable in order to protect 
young pups.
    16. Comment: The Service should increase protections to avoid 
impacts to bats from the point that they emerge from hibernation to the 
end of the maternity/pup season. Forest management should only be done 
in a manner that retains sufficient vegetative cover and protects 
northern long-eared bats at the maternity colony level.
    Our Response: We considered incorporating other possible 
conservation measures related to forest management and conversion. 
However, given the overall small percentage of the species' range 
potentially affected by these activities in any given year, it was not 
clear that additional conditions related to the incidental take from 
forest management or conversion would meaningfully change the 
conservation outlook for the species. Further, adding protections with 
uncertain benefits, but with large potential public impacts can hinder 
support for the species conservation. We have determined that 
protection of known, occupied maternity roost trees during the months 
of June and July is an adequate conservation measure for the protection 
of non-volant pups.
    17. Comment: Commenter(s) suggested an exemption for invasive 
species management in forested landscapes.
    Our Response: Outside of hibernacula, this final rule does not 
prohibit take from activities other than tree removal. Therefore, 
incidental take associated with management of invasive species using 
pesticides or other interventions is not prohibited. Where intervention 
involves tree removal, conservation measures must be followed to comply 
with this rule. However, entities that cannot apply the required 
conservation measures have other means to have take excepted, such as 
section 10 permits or section 7 incidental take authorization.

Human Structures

    18. Comment: Commenters suggested expansion of the definition of 
human structures/dwellings to include bridges, culverts, cattle passes, 
and other human-made structures.
    Our Response: This final rule does not prohibit direct take of 
northern long-eared bats occupying human structures defined as houses, 
garages, barns, sheds, and other buildings designed for human entry. 
While we encourage landowners and project proponents to find other 
mechanisms to avoid killing or injuring bats that occupy bridges, 
culverts, and other structures, incidental take is not prohibited by 
this rule. While bridge and culvert use for the species has been 
documented, it is relatively uncommon compared to tree or other types 
of roost sites (e.g., barns) and, therefore, did not warrant specific 
provisions in this final rule. Within the WNS zone, however, project 
proponents must apply conservation measures to avoid habitat removal 
around hibernacula and to avoid cutting or destroying known, occupied 
maternity roost trees or any other trees within a 150-foot radius from 
the maternity roost tree during June and July.
    19. Comment: Commenters stated that take of northern long-eared bat 
in human dwellings should not be exempted and requested that the 
Service provide rationale for determining that this exemption is 
necessary.
    Our Response: We encourage the non-lethal removal of northern long-
eared bats from human structures whenever possible, preferably by 
excluding them from the structure outside of the maternity period. 
However, because of the potential for human health considerations, we 
have not required this as part of the exception to the purposeful take 
prohibition. Please see the discussion under Exceptions to the 
Purposeful Take Prohibition in this rule for additional details. Take 
of northern long-eared bats to remove them from human structures is not 
prohibited.

Hazardous Tree Removal

    20. Comment: Several comments requested clarification and/or 
expansion of the exception to take for removal of hazardous trees.
    Our Response: Our intent is to provide for the removal of hazardous 
trees for the protection of human life and property. This is not the 
same as hazard tree removal within the context of forest management or 
rights-of-way management where hazard trees are identified as trees 
that are in danger of falling. Incidental take of northern long-eared 
bats from hazardous tree removal in the context of rights-of-way 
management is not prohibited by the final 4(d) rule provided 
conservation measures to protect known hibernacula and known, occupied 
maternity roost trees are applied.

Minimal Tree Removal

    21. Comment: Several commenters requested that minimal tree removal 
be expanded to a larger acreage.
    Our Response: Conversion of forested cover to alternate uses is not 
prohibited under this final rule, provided that conservation measures 
are followed when those activities occur within the WNS zone. For a 
discussion of this issue, please see Forest Conversion section in this 
rule.
    22. Comment: Several commenters stated that the exemption for 
minimal tree removal should be expanded to other (non-forest) industry 
entities and should include all activities that have a

[[Page 1915]]

minimal effect on the northern long-eared bat.
    Our Response: Conversion of forested acreages to alternate uses is 
not prohibited under this final rule, provided that conservation 
measures are followed. This is applicable to all entities that may 
engage in activities that remove trees or convert forested acres. See 
the Forest Conversion section in this rule.

Oil and Gas Industry

    23. Comment: A number of commenters from the oil and gas industry 
stated that the industry should be included within exemptions from take 
prohibitions because: (1) Their impact on northern long-eared bat 
habitat is small compared to forest management impacts; (2) habitat is 
re-vegetated following pipeline installation; (3) oil and gas 
exploration and transport are not the stated primary threat to the 
species (WNS is the primary threat); and (4) adequate regulatory 
mechanisms exist for mitigating industry environmental impacts.
    Our Response: Take of northern long-eared bats attributable to 
habitat conversion and habitat loss is not prohibited under this final 
4(d) rule, provided that developers and project proponents follow 
conservation measures described herein when activities occur within the 
WNS zone. See the Forest Conversion section in this rule.

Rights-of-Way

    24. Comment: Commenter(s) stated that loss of habitat attributable 
to clearing for linear projects is miniscule compared to habitat 
conversion due to forest management.
    Our Response: Incidental take attributable to maintenance, 
development, and rights-of-way expansion is not prohibited by this 
final 4(d) rule, provided conservation measures contained herein are 
followed when activities occur within the WNS zone.
    25. Comment: Commenter(s) stated that the exception, as proposed 
and implemented via the interim rule, should be expanded to greater 
than 100-feet and should be clarified.
    Our Response: Incidental take attributable to maintenance, 
development, and rights-of-way expansion is not prohibited by this 
final 4(d) rule, provided conservation measures contained herein are 
followed when activities occur within the WNS zone.
    26. Comment: Commenter(s) stated that the exception for rights-of-
way should be expanded to include new rights-of-way and transmission 
corridors.
    Our Response: Incidental take attributable to maintenance, 
development, and rights-of-way expansion is not prohibited by this 
final 4(d) rule, provided conservation measures contained herein are 
followed when activities occur within the WNS zone.
    27. Comment: Commenter(s) disagree with the Service's assertion 
that vegetation removal within or adjacent to rights-of-way is a small-
scale alteration of habitat.
    Our Response: It is within the context of the species range and 
potential for available habitat that right-of-way development, 
maintenance or expansion are small scale alterations of forest habitat. 
The extent of conversion from forest to other land cover types has been 
fairly consistent with conversion to forest (cropland reversion/
plantings). Further, the recent past and projected amounts of forest 
loss to conversion from all sources was and is anticipated to be only a 
small percentage of the total amount of forest habitat. For example by 
2060, 4 to 8 percent of forest area found in 2007 across the 
conterminous United States is expected to be lost (U.S Forest Service 
2012, p. 12). We have not broadened the incidental prohibition related 
to habitat loss because WNS is the predominant threat to the species. 
Summer habitat does not now or in the future appear likely to be a 
limiting factor for the species; therefore, we have focused the 
protections on vulnerable individuals in summer habitat and protecting 
the winter habitat, where sensitivity to the effects of WNS is 
heightened.
    28. Comment: Commenter(s) requested that the Service expand the 
rights-of-way exemption to include access roads and infrastructure 
required to deliver services.
    Our Response: Incidental take attributable to maintenance, 
development, and rights-of-way expansion is not prohibited by this 
final 4(d) rule, provided conservation measures contained herein are 
followed when activities occur within the WNS zone. This includes 
related activities such as access road clearing and facilities related 
to delivery of services. In the case where tree removal is the activity 
in question, incidental take is not prohibited provided that the 
conservation measures herein are followed when those activities occur 
within the WNS zone.
    29. Comment: Commenter suggested that the final 4(d) rule should 
prohibit all tree clearing activities related to the maintenance, 
repair, and creation of rights-of-way.
    Our Response: The northern long-eared bat is not limited in terms 
of habitat availability for feeding, breeding, and sheltering in the 
summer (non-hibernating) months. We have carefully considered the value 
of habitat protection for the species. We have determined that 
protection of summer habitat is not required for species conservation 
except where trees are known to be occupied by northern long-eared bats 
when the young are non-volant (flightless) and for areas immediately 
surrounding hibernacula where they swarm and feed just prior to 
hibernation and when they emerge from hibernation in the spring.

Solar Energy

    30. Comment: Commenter(s) requested that solar energy development 
be provided an exemption under the 4(d) rule.
    Our Response: Solar energy developers will need to consider the 
impacts of their development and operations in light of the 
prohibitions of this rule. Incidental take outside of the WNS zone is 
not prohibited. Incidental take from tree-removal activities within the 
WNS zone is prohibited under specific conditions related to known 
hibernacula and known, occupied maternity roost trees (see Activities 
Involving Tree Removal section above for details).

Agriculture

    31. Comment: Commenter(s) requested that agricultural activities be 
included in the suite of exempted activities under the 4(d) rule.
    Our Response: We have substantially revised the prohibitions and 
exceptions in this final rule that may apply to agricultural 
activities. Agricultural producers/operators will need to consider the 
impacts of their activities in light of the prohibitions of this rule. 
Incidental take outside of the WNS zone is not prohibited. Incidental 
take from tree removal activities within the WNS zone is prohibited 
under specific conditions related to known hibernacula and known, 
occupied maternity roost trees (see Activities Involving Tree Removal, 
above, for details). This final rule has been restructured in a manner 
that it applies prohibitions where necessary and advisable for 
conservation of the species. Therefore, agricultural development and 
operations do not need to be specifically ``excepted'' in order to 
apply the rule's provisions.

[[Page 1916]]

Caves and Mines

    32. Comment: Commenter(s) requested an exemption for show caves and 
cave tours.
    Our Response: Hibernating bats are very sensitive to disturbance as 
discussed in greater detail under the Hibernacula section of this 
document. This final rule prohibits the incidental take of northern 
long-eared bats in hibernacula inside the WNS zone as well as the 
purposeful take (e.g., purposefully harassing or killing) of northern 
long-eared bats in hibernacula both inside and outside of the WNS zone. 
When this species occupies caves or mines used by people regardless of 
the purpose, the provisions of this 4(d) rule apply. Show cave or mine 
activities inside the WNS zone that do not result in the incidental 
take of northern long-eared bats are not prohibited. In other words, if 
northern long-eared bats are not being disrupted from their normal 
hibernation behaviors (e.g., by avoiding areas with hibernating bats, 
limiting noise and lighting in areas used by bats), we do not consider 
human use of the cave or mine to be a ``take'' of the bats.
    33. Comment: Commenter(s) stated that an exemption should be made 
available for mining, mineral exploration, and coal extraction 
activities.
    Our Response: Incidental take of northern long-eared bats that 
results from tree-removal activity, including mining operations, is 
prohibited in some circumstances (see Activities Involving Tree 
Removal, above). However, hibernating bats are very sensitive to 
disturbance, as discussed in greater detail under the Hibernacula 
section of this rule. This final rule prohibits the incidental take of 
northern long-eared bats in hibernacula inside the WNS zone as well as 
the purposeful take (e.g., purposefully harassing or killing) of 
northern long-eared bats in hibernacula both inside and outside of the 
WNS zone. Inside the WNS zone, the take of northern long-eared bats in 
mines and man-made tunnels for mineral or coal extraction includes any 
activity that kills, injures, harms, or harasses the species. Mining, 
mineral exploration, and coal extraction activities will need to work 
with the Service to find alternative means to authorize take, such as 
through a section 10 permitting process or section 7 process where 
applicable. Mining activities inside the WNS zone that do not result in 
the incidental take of northern long-eared bats are not prohibited. In 
other words, if northern long-eared bats are not being killed, injured, 
or otherwise disrupted from their normal hibernation behaviors by the 
mining operations, we do not consider those activities to be a ``take'' 
of the bats.
    34. Comment: Commenter(s) suggested that activities designed to re-
claim abandoned mines or maintain cave environments for the benefit of 
wildlife species should be exempt under the 4(d) rule.
    Our Response: We agree that beneficial reclamation and maintenance 
should be encouraged. However, exception from take prohibitions through 
a species-specific 4(d) rule is not the appropriate mechanism for 
authorizing this activity. Where abandoned mines and cave environments 
are in use by northern long-eared bats, take associated with 
maintenance is prohibited; however, we encourage project proponents to 
work with the Service to implement best management practices to avoid 
or minimize the effects of their actions in the interest of habitat 
improvement. We will work with project proponents to determine 
alternate ways to authorize activities, such as section 10 permits or 
section 7 incidental take authorization.

Mosquito Control

    35. Comment: Commenter challenges the Service's assertion that 
chemicals used in mosquito control (malathion and others of comparable 
risk to mammals) pose a risk to northern long-eared bats; commenter 
further requests an exemption for mosquito control activities, 
especially where there is a public health risk.
    Our Response: Please see the Environmental Contaminants section of 
this rule for details concerning our evaluation of the risks from 
pesticide applications. After careful consideration of the available 
information, we do not include in this rule a prohibition on the 
incidental take of northern long-eared bats as result of pesticide 
application provided the application is a ``lawful activity,'' that is, 
it must comply all applicable State laws. Any northern long-eared bat 
unlawfully taken pursuant to a State pesticide law would be a violation 
of this final 4(d) rule.
Adequacy and Clarity of 0.25 Mile Hibernacula Buffer
    36. Comment: Commenter(s) suggested that this buffer is too 
restrictive for landowners.
    Our Response: The Service has determined that a protective buffer 
around known hibernacula is necessary and advisable for the 
conservation of the species. Please see the discussion under 
Conservation Measure 1: Tree Removal Near Known Northern Long-eared Bat 
Hibernacula of this rule for our explanation of the need for this 
buffer. As described in that section, we have prohibited incidental 
take of northern long-eared bats under specific tree-removal 
circumstances; however, that does not mean that all activities 
involving tree-removal activities within the 0.25-mile (0.4-km) buffer 
of hibernacula will result in take. For example, a timber harvest might 
be conducted within 0.25 miles (0.4 km) of a hibernaculum at a time 
when bats are unlikely to be roosting in trees within the buffer (e.g., 
winter) that fully protects any bats in the hibernaculum as well as the 
hibernaculum's suitability for bats (i.e., bat's access, microclimate), 
and does not significantly change the suitability of the habitat for 
foraging by northern long-eared bats or perhaps even improves prey 
availability. In such a case, the timber harvest, although closer than 
0.25 miles (0.4 km) to the hibernaculum, is not likely to result in 
incidental take, so we would not recommend that the timber harvester 
seek authorization for incidental take pursuant to the Act. Further, 
while incidental take of northern long-eared bats within that buffer is 
prohibited (in the WNS zone), it may be authorized on a case-by-case 
basis with further coordination with the Service at a local level. Take 
may be authorized through section 10 or section 7 of the Act. In 
addition, it is our expectation that project modifications may be made 
that would protect the hibernaculum and allow for the project 
proponent's objectives to be met.
    37. Comment: Commenter(s) seek clarification on whether the buffer 
and prohibition to clearcutting (within the buffer) is a year-round 
restriction.
    Our Response: Yes, the protection of the hibernaculum and a buffer 
around it is a year round protective measure and applies to all types 
of tree-removal activities in the WNS zone.
    38. Comment: Commenter(s) suggested that the buffer around 
hibernacula be limited to fall swarming and spring emergence when 
northern long-eared bats are present.
    Our Response: We have determined that protective measures must be 
considered year-round for several reasons, including that habitat lost 
outside of the spring emergence and fall swarming period could affect 
the suitability of those habitats later during spring emergence or fall 
swarming. Further, we have included the buffer on hibernacula for 
several reasons beyond protecting foraging habitat during fall swarming 
and spring emergence. In particular, the buffer will help to protect 
the micro-climate characteristics of

[[Page 1917]]

hibernacula and other entrances used by bats that may not be reflected 
in the primary location information for hibernacula. For example, many 
caves or abandoned mines used may have entrances used by bats that are 
not reflected in the general location information for those sites that 
are used by people; a buffer helps to protect less prominent features 
that may be important to bats. Projects may be able to be planned or 
modified within those buffer areas to retain sufficient habitat and 
avoid harm; however, the Service considers coordination on a case-by-
case basis to be important to assure necessary conservation.
    39. Comment: Several commenter(s) suggested an increased buffer 
area around hibernacula would be more appropriate.
    Our Response: We have revised the approach used in this final 4(d) 
rule to ensure that hibernating northern long-eared bats in the WNS 
zone are protected from incidental take independent of the buffer size 
used in the conservation measure. In addition, all northern long-eared 
bats both inside and outside of the WNS zone are protected from 
purposeful take (e.g., killing or intentionally harassing northern 
long-eared bats), including while in hibernacula where they are most 
vulnerable. We have retained the 0.25-mile buffer (0.25-mile radius 
from known hibernacula entrance/access points used by bats) to further 
protect the hibernacula and associated forested habitat for several 
reasons (see discussion above under Conservation Measure 1: Tree 
Removal Near Known Northern Long-eared Bat Hibernacula).
    40. Comment: Commenter(s) expressed concern with implementing 
measures when they do not have data/information on known hibernacula.
    Our Response: The Service recognizes the challenges associated with 
data sharing and data management. Many states share data management 
concerns and guard data carefully. We encourage landowners to continue 
to work with your State natural resources and natural heritage staff to 
evaluate your ownership for the presence of these important resources. 
When seeking information on the presence of hibernacula within your 
project boundary, our expectation is that a project proponent will 
complete due diligence to determine available data. However, if 
information is not available, we recognize that the project proponent 
that has made reasonable efforts to determine whether there are known 
hibernacula on the property is in the position of not knowing if no 
data have been provided.
Maternity Roost Tree Restrictions
    41. Comment: Commenter(s) expressed concerns about having adequate 
information to identify maternity roost trees.
    Our Response: We recognize the challenges associated with data 
sharing. Please see response to Comment 40. While not required by this 
rule, the Service recommends summer surveys to definitively locate 
maternity roost trees.
    42. Comment: Commenter(s) requested that we clarify that roost 
trees means maternity roost trees.
    Our Response: We have made this final 4(d) rule specific to 
maternity roost trees.
    43. Comment: Commenter(s) expressed disagreement with the 0.25 mile 
buffer around known, occupied roost trees. Some commented that this 
buffer was too small, while some commented that it was too large.
    Our Response: In the interim 4(d) rule (80 FR 17974; April 2, 
2015), the buffer around known, occupied roost trees applied only to 
some types of tree-removal activities (e.g., forest management, rights-
of-ways, prairie management) and excluded only clearcuts (and similar 
harvest methods). Given the relatively small percent of forest habitat 
anticipated to be impacted by forest management or conversion (see 
Forest Management and Forest Conversion, above of this rule for more 
details), we revised the buffer around the known maternity roost trees. 
As explained in more detail under Conservation Measure 2: Tree Removal 
Near Known Maternity Roost Trees, we have made the buffer more broadly 
applicable to all tree-removal activities, but have narrowed it in size 
to provide protection for the maternity roost tree, while minimizing 
the potential that the protective measure would serve as impediment to 
conducting new surveys. We have reduced the buffer around known, 
occupied maternity roost trees to a radius of 150 feet around the 
known, occupied maternity roost tree.
    44. Comment: Commenter(s) stated that the Service should require 
surveys to determine where roost trees are located.
    Our Response: The Act does not require a private landowner to 
survey his or her property to determine whether endangered or 
threatened wildlife and plants occupy their land. We encourage 
landowners to voluntarily seek additional information to conserve 
natural resources in their land use/land management actions; however, 
we will not require surveys to locate northern long-eared bats and 
maternity roost trees on private property.

Residential Housing Development

    45. Comment: Commenter(s) requested that northern long-eared bat 
take be excepted for the purposes of residential housing development.
    Our Response: Take resulting from removal of summer habitat (tree 
removal) is not prohibited provided the conservation measures set forth 
in this rule are followed when the habitat removal occurs within the 
WNS zone. The provisions of this final rule have been restructured to 
clarify prohibitions rather than rely on a list of excepted activities.

Wind Energy Development

    46. Comment: Commenter(s) requested that northern long-eared bat 
take be excepted for the purposes of renewable energy development and 
operation (wind energy).
    Our Response: Incidental take resulting from wind energy 
development and operation is not prohibited, provided that the 
conservation measures set forth in this rule are followed to protect 
hibernacula and known, occupied maternity roost trees. We strongly 
encourage voluntary conservation measures and best management practices 
such as feathering or elevated cut-in speeds to reduce impacts to 
northern long-eared bats and other bats; however, we have not 
prohibited incidental take attributable to wind energy in this final 
rule. Please see the Wind Energy Facilities section of this rule for 
additional details.

Natural Resource Management

    47. Comment: Commenter(s) requested that northern long-eared bat 
take be excepted when activities are included in Department of Defense 
integrated natural resource management plans, providing for activities 
such as recreational activities, burns, and other temporary but 
insignificant effects on the northern long-eared bat.
    Our Response: Incidental take resulting from activities described 
as recreational activities and beneficial wildlife habitat management/
maintenance is not prohibited, provided that the conservation measures 
set forth in this rule are followed when the activity occurs inside the 
WNS zone. We have completed a section 7 analysis on the provisions of 
this final 4(d) rule to ensure that actions completed in accordance 
with the final rule are not likely to jeopardize the continued 
existence of the species. Where these resource management activities do 
not fit within the final rule, section 7 consultation would need to be

[[Page 1918]]

completed to authorize incidental take of the northern long-eared bat.

Compliance and Monitoring

    48. Comment: Commenter(s) recommended that surveys be required and 
that landowners be required to report on their activities in order to 
receive the benefits of the 4(d) rule.
    Our Response: While we welcome landowners' efforts to determine 
where bats may be located on their property, the Act does not require 
that a landowner survey his or her property to find species. We are not 
mandating that surveys be completed as part of this rule.

Alternate Section 4(d) Provisional Language

    49. Comment: One organization commented on behalf of its members 
and 14 other environmental organizations (collectively referenced as 
``the Center'') in support of the adoption of a different 4(d) rule and 
in opposition of the Service's proposed and the interim 4(d) rules.
    Our Response: The remaining paragraphs (under the heading Summary 
of Comments and Recommendations on the Proposed and Interim4(d) Rules) 
pertain to the comments we received from the Center. With respect to 
the overarching comment that our 4(d) rule does not conserve the 
species, we believe that our final 4(d) rule provides for the 
``necessary and advisable'' conservation of the species, as described 
herein. For further information, please see our Determination section, 
below.
    With respect to the Center's proposed 4(d) language, we note that 
the proposed language defines specific prohibitions and would make a 
regulatory determination of ``take'' to include a number of actions. 
These include cave and mine entry without implementing decontamination 
protocols; transporting equipment into caves and mines or between caves 
and mines between the WNS zone and non-WNS zone; cave and mine entry 
during hibernation periods; activities associated with hydraulic 
fracturing within 5 miles of a hibernaculum, within 1.5 miles of an 
occupied roost tree, or within 3 miles of an acoustic detection or bat 
capture record; noise disturbance activities within a 0.5-mile radius 
of a hibernaculum during the hibernation period; and disruption of 
water sources within hibernacula. With respect to protection of 
hibernacula, take of northern long-eared bats is prohibited. 
Establishing the causal connection between a variety of activities such 
as those the Center proposed to be defined as prohibitions is beyond 
the scope of this rule. We have addressed hibernacula protection 
provisions in this rule under the section entitled Conservation Measure 
1: Tree Removal Near Known Northern Long-eared Bat Hibernacula. 
Protections in this final rule are adequate to protect the species.
    In addition to the Center's suggested language for hibernacula 
prohibitions, they recommended language regarding prohibitions for 
prescribed burning and aerial spraying. Based on our analysis, we 
conclude that prescribed burning and aerial spraying do not have a 
measurable population-level impact on the species and regulation of 
those activities will not meaningfully impact the species' ability to 
recover. For further information on prescribed fire impacts, see 
Prescribed Fire above. For further information on aerial spraying of 
pesticides, please see the Environmental Contaminants section above.
    The final prohibition suggested by the Center was the operation of 
utility-scale wind projects, specifically during the hours from dusk to 
sunrise during the fall swarming season, at low wind speeds, and within 
5 miles of a hibernaculum. Incidental take resulting from the operation 
of wind energy facilities is not prohibited by this final 4(d) rule and 
a complete discussion of known impacts to the species may be found in 
the Wind Energy Facilities section above.
    Finally, the Center provided suggested regulatory text for 
exemptions from prohibitions that included language for seasonal 
restrictions, clearing restrictions, mandatory measures for hibernacula 
protection (gate installation), water quality protection measures, and 
data collection and reporting requirements. We recognize the effort 
that has gone into the development of this alternative language. 
However, we have carefully considered the measures that are necessary 
for the protection of the species. Our final rule has been developed 
based on the Service's desire to implement protective measures that 
will make a meaningful impact on species conservation and recovery. As 
stated elsewhere in this document (see Determination section, below), 
we have provided regulatory flexibility while implementing protective 
measures where we have determined those measures to be necessary and 
advisable for conservation of the species.

Determination

    Section 4(d) of the Act states that ``the Secretary shall issue 
such regulations as she deems `necessary and advisable to provide for 
the conservation' '' of species listed as threatened species. 
Conservation is defined in the Act to mean ``to use and the use of all 
methods and procedures which are necessary to bring any endangered 
species or threatened species to the point at which the measures 
provided pursuant to [the Act] are no longer necessary.''
    The courts have recognized the extent of the Secretary's discretion 
under this standard to develop rules that are appropriate for the 
conservation of a species. For example, the Secretary may find that it 
is necessary and advisable not to include a taking prohibition, or to 
include a limited taking prohibition. See Alsea Valley Alliance v 
Lautenbacher, 2007 U.S. Dist. Lexis 60203 (D. Or. 2007); Washington 
Environmental Council v. National Marine Fisheries Service, 2002 U.S. 
Dist. Lexis 5432 (W.D. Wash. 2002). In addition, as affirmed in State 
of Louisiana v. Verity, 853 F. 2d 322 (5th Cir. 1988), the rule need 
not address all the threats to the species. As noted by Congress when 
the Act was initially enacted, ``once an animal is on the threatened 
list, the Secretary has an almost infinite number of options available 
to him [her] with regard to the permitted activities for those species. 
[She] may, for example, permit taking, but not importation of such 
species,'' or she may choose to forbid both taking and importation but 
allow the transportation of such species, as long as the prohibitions, 
and exceptions to those prohibitions, will ``serve to conserve, 
protect, or restore the species concerned in accordance with the 
purposes of the Act'' (H.R. Rep. No. 412, 93rd Cong., 1st Sess. 1973).
    Section 9 prohibitions make it illegal for any person subject to 
the jurisdiction of the United States to violate any regulation 
pertaining to any threatened species of fish or wildlife listed 
pursuant to section 4 of the Act and promulgated by the Secretary 
pursuant to authority provided by the Act. Under this final 4(d) rule, 
incidental take of the northern long-eared bat will not be prohibited 
outside the WNS zone. Incidental take also will not it be prohibited 
within the WNS zone, outside of hibernacula, provided that it occurs 
more than 0.25 miles (0.4 km) from a known hibernacula and does not 
result from an activity that cuts or destroys known occupied maternity 
roost trees, or any other trees within a 150-foot (45-m) radius from 
the maternity tree, during the pup season (June 1 through July 31).
    Accordingly, we have determined that this provision is necessary 
and advisable for the conservation of the northern long-eared bat as 
explained below.

[[Page 1919]]

    Although not fully protective of every individual, the conservation 
measures identified in this final rule help protect maternity colonies. 
This final species-specific rule under section 4(d) of the Act provides 
the flexibility for certain activities to occur that have not been the 
cause of the species' imperilment, while still promoting conservation 
of the species across its range.
    The northern long-eared bat was listed as a threatened species 
under the Act, with an interim rule under section 4(d), on April 2, 
2015 (80 FR 17974). At that time, the Service invited public comment on 
the interim 4(d) rule for 90 days, ending July 1, 2015. The Service had 
already received comments for 60 days on its proposed 4(d) rule (80 FR 
2371; January 16, 2015). In total, the Service received approximately 
40,500 comments on the proposed and interim 4(d) rules. For a complete 
discussion of the comments, as well as the Service's response to 
comments, see Summary of Comments and Recommendations on the Proposed 
and Interim 4(d) Rules, above.
    Because the primary threat to the northern long-eared bat is a 
fungal disease known as WNS, the Service has tailored the final 4(d) 
rule to prohibit the take of northern long-eared bats from certain 
activities within areas where they are in decline, as a result of WNS, 
and within these areas we apply incidental take protection only to 
known, occupied maternity roost trees and known hibernacula. These 
protections will help to conserve the northern long-eared bat during 
its most vulnerable life stages (from birth to flight, or volancy) and 
during spring and fall swarming (near hibernacula).
    In summary, this 4(d) rule is necessary and advisable to provide 
for the conservation of the northern long-eared bat because it provides 
for protection of known maternity roost trees and known hibernacula 
within the WNS zone. In addition, promulgation of this rule allows the 
conservation community to provide for species conservation where it can 
affect change, namely during the northern long-eared bat's most 
vulnerable life stages and where hibernation occurs. This final 4(d) 
rule allows the regulated public to manage lands in a manner that is 
lawful and compatible with species' survival, and it allows for 
protection of the species in a manner that the Secretary deems to be 
necessary and advisable for the conservation of the northern long-eared 
bat. By this rule, the Secretary deems that the prohibition of certain 
take, which is incidental to otherwise lawful activities that take bat 
habitat, is not necessary for the long-term survival of the species. 
Furthermore, she acknowledges the importance of addressing the threat 
of WNS as the primary measure to arrest and reverse the decline of the 
species. Nothing in this 4(d) rule affects other provisions of the Act, 
such as designation of critical habitat under section 4, recovery 
planning under section 4(f), and consultation requirements under 
section 7.

Required Determinations

Regulatory Planning and Review

(Executive Orders 12866 and 13563)
    Executive Order 12866 provides that the Office of Information and 
Regulatory Affairs (OIRA) in the Office of Management and Budget will 
review all significant rules. OIRA has determined that this rule is not 
significant. Executive Order 13563 reaffirms the principles of E.O. 
12866 while calling for improvements in the nation's regulatory system 
to promote predictability, to reduce uncertainty, and to use the best, 
most innovative, and least burdensome tools for achieving regulatory 
ends. The executive order directs agencies to consider regulatory 
approaches that reduce burdens and maintain flexibility and freedom of 
choice for the public where these approaches are relevant, feasible, 
and consistent with regulatory objectives. E.O. 13563 emphasizes 
further that regulations must be based on the best available science 
and that the rulemaking process must allow for public participation and 
an open exchange of ideas. We have developed this final 4(d) rule in a 
manner consistent with these requirements.
Regulatory Flexibility Act (5 U.S.C. 601 et seq.)
    Listing and status determinations under the Endangered Species Act 
of 1973, as amended (Act; 16 U.S.C. 1531 et seq.), and any prohibitions 
or protective measures afforded the species under the Act are exempt 
from the Regulatory Flexibility Act (RFA; 5 U.S.C. 601 et seq., as 
amended by the Small Business Regulatory Enforcement Fairness Act 
(SBREFA) of 1996). However, as this final 4(d) rule is being 
promulgated following the final listing of the northern long-eared bat, 
we evaluate whether the Regulatory Flexibility Act applies to this 
rulemaking.
    Under the Regulatory Flexibility Act, whenever an agency must 
publish a notice of rulemaking for any proposed or final rule, it must 
prepare and make available for public comment a regulatory flexibility 
analysis that describes the effects of the rule on small entities 
(small businesses, small organizations, and small government 
jurisdictions). However, no regulatory flexibility analysis is required 
if the head of the agency certifies the rule will not have a 
significant economic impact on a substantial number of small entities. 
SBREFA amended the RFA to require Federal agencies to provide a 
statement of the factual basis for certifying that the rule will not 
have a significant economic impact on a substantial number of small 
entities. Thus, for a regulatory flexibility analysis to be required, 
impacts must exceed a threshold for ``significant impact'' and a 
threshold for a ``substantial number of small entities.'' See 5 U.S.C. 
605(b). Based on the information that is available to us at this time, 
we certify that this rule will not have a significant economic impact 
on a substantial number of small entities. The following discussion 
explains our rationale.
    On April 2, 2015 (80 FR 17974), we published the final 
determination to list the northern long-eared bat as a threatened 
species and an interim 4(d) rule. That rule became effective on May 4, 
2015, and the interim 4(d) rule will remain in effect until this final 
rule becomes effective (see DATES, above). The interim 4(d) rule 
generally applies the prohibitions of 50 CFR 17.31 and 17.32 to the 
northern long-eared bat, which means that the interim rule, among other 
things, prohibits the purposeful take of northern long-eared bats 
throughout the species' range, but the interim rule includes exceptions 
to the purposeful take prohibition. The exceptions for purposeful take 
are: (1) In instances of removal of northern long-eared bats from human 
structures (if actions comply with all applicable State regulations); 
and (2) for authorized capture, handling, and related activities of 
northern long-eared bats by individuals permitted to conduct these same 
activities for other bat species until May 3, 2016. Under the interim 
rule, incidental take is not prohibited outside the WNS zone if the 
incidental take results from otherwise lawful activities. Inside the 
WNS zone, there are exceptions for incidental take for the following 
activities, subject to certain conditions: Implementation of forest 
management; maintenance and expansion of existing rights-of-way and 
transmission corridors; prairie management; minimal tree removal; and 
removal of hazardous trees for the protection of human life and 
property.
    This final 4(d) rule does not generally apply the prohibitions of 
50 CFR 17.31 to the northern long-eared bat. This rule continues to 
prohibit purposeful take of

[[Page 1920]]

northern long-eared bats throughout the species' range, except in 
certain cases, including in instances of removal of northern long-eared 
bats from human structures and for authorized capture, handling, and 
related activities of northern long-eared bats by individuals permitted 
to conduct these same activities for other bat species until May 3, 
2016. After May 3, 2016, a permit pursuant to section 10(a)(1)(A) of 
the Act is required for the capture and handling of northern long-eared 
bats. Under this rule, incidental take is still not prohibited outside 
the WNS zone. Within the WNS zone, incidental take is prohibited only 
if: (1) Actions result in the incidental take of northern long-eared 
bats in hibernacula; (2) actions result in the incidental take of 
northern long-eared bats by altering a known hibernaculum's entrance or 
interior environment if the alteration impairs an essential behavioral 
pattern, including sheltering northern long-eared bats; or (3) tree-
removal activities result in the incidental take of northern long-eared 
bats when the activity either occurs within 0.25 mile (0.4 kilometer) 
of a known hibernaculum, or cuts or destroys known, occupied maternity 
roost trees or any other trees within a 150-foot (45-meter) radius from 
the maternity roost tree during the pup season (June 1 through July 
31). This approach allows more flexibility to affected entities and 
individuals in conducting activities within the WNS zone. Under this 
rule, we individually set forth prohibitions on possession and other 
acts with unlawfully taken northern long-eared bats, and on import and 
export of northern long-eared bats. These prohibitions were included in 
the interim 4(d) through the general application of the prohibitions of 
50 CFR 17.31 to the northern long-eared bat. Under this rule, take of 
the northern long-eared bat is also not prohibited for the following: 
Removal of hazardous trees for protection of human life and property; 
take in defense of life; and take by an employee or agent of the 
Service, of the National Marine Fisheries Service, or of a State 
conservation agency that is operating a conservation program pursuant 
to the terms of a cooperative agreement with the Service. Regarding 
these three exceptions, take in defense of life was not included in the 
interim 4(d) rule, but the other two exceptions were, either through 
the general application of 50 CFR 17.31 or through a specific exception 
included in the interim 4(d) rule. Therefore, this final 4(d) rule will 
result in less restrictive regulations under the Act than those set 
forth in the interim 4(d) rule.
    We completed an analysis of the forested land area that may be 
impacted by this rulemaking. There are approximately 400,000,000 acres 
(161,874,256 ha) of forested habitat across the range of the northern 
long-eared bat, which includes 37 States and the District of Columbia. 
This rule may restrict land use activities on approximately 200,000 
acres (80,937 ha). This area constitutes less than 0.05 percent of all 
forested habitat across the extensive range of the northern long-eared 
bat. Any impact in this very small portion of forested habitat is not 
expected to affect a substantial number of entities in any given 
sector, nor result in a significant economic impact on any given 
entity. For the above reasons, we certify that the final rule will not 
have a significant economic impact on a substantial number of small 
entities. Therefore, a final regulatory flexibility analysis is not 
required.
Energy Supply, Distribution, or Use--Executive Order 13211
    Executive Order 13211 (Actions Concerning Regulations That 
Significantly Affect Energy Supply, Distribution, or Use) requires 
agencies to prepare Statements of Energy Effects when undertaking 
certain actions. For reasons discussed within this final rule, we 
believe that the rule will not have any effect on energy supplies, 
distribution, or use. Therefore, this action is not a significant 
energy action, and no Statement of Energy Effects is required.
Unfunded Mandates Reform Act
    In accordance with the Unfunded Mandates Reform Act (2 U.S.C. 1501 
et seq.), we make the following findings:
    (1) This final rule will not produce a Federal mandate. In general, 
a Federal mandate is a provision in legislation, statute, or regulation 
that would impose an enforceable duty upon State, local, or Tribal 
governments, or the private sector, and includes both ``Federal 
intergovernmental mandates'' and ``Federal private sector mandates.'' 
These terms are defined in 2 U.S.C. 658(5)-(7). ``Federal 
intergovernmental mandate'' includes a regulation that ``would impose 
an enforceable duty upon State, local, or [T]ribal governments'' with 
two exceptions. It excludes ``a condition of Federal assistance.'' It 
also excludes ``a duty arising from participation in a voluntary 
Federal program,'' unless the regulation ``relates to a then-existing 
Federal program under which $500,000,000 or more is provided annually 
to State, local, and [T]ribal governments under entitlement 
authority,'' if the provision would ``increase the stringency of 
conditions of assistance'' or ``place caps upon, or otherwise decrease, 
the Federal Government's responsibility to provide funding,'' and the 
State, local, or Tribal governments ``lack authority'' to adjust 
accordingly. At the time of enactment, these entitlement programs were: 
Medicaid; AFDC work programs; Child Nutrition; Food Stamps; Social 
Services Block Grants; Vocational Rehabilitation State Grants; Foster 
Care, Adoption Assistance, and Independent Living; Family Support 
Welfare Services; and Child Support Enforcement. ``Federal private 
sector mandate'' includes a regulation that ``would impose an 
enforceable duty upon the private sector, except (i) a condition of 
Federal assistance or (ii) a duty arising from participation in a 
voluntary Federal program.''
    (2) This final 4(d) rule will result in less restrictive 
regulations under the Act, as it pertains to the northern long-eared 
bat, than would otherwise exist without a 4(d) rule or under the 
interim 4(d) rule. As a result, we do not believe that this rule will 
significantly or uniquely affect small government entities. Therefore, 
a Small Government Agency Plan is not required.
Takings
    In accordance with Executive Order 12630, this final rule will not 
have significant takings implications. We have determined that the rule 
has no potential takings of private property implications as defined by 
this Executive Order because this 4(d) rule will result in less-
restrictive regulations under the Act than would otherwise exist. A 
takings implication assessment is not required.
Federalism
    In accordance with Executive Order 13132, this final 4(d) rule does 
not have significant Federalism effects. A federalism summary impact 
statement is not required. This rule will not have substantial direct 
effects on the State, on the relationship between the Federal 
Government and the State, or on the distribution of power and 
responsibilities among the various levels of government.
Civil Justice Reform
    In accordance with Executive Order 12988, the Office of the 
Solicitor has determined that this final rule does not unduly burden 
the judicial system and meets the requirements of sections 3(a) and 
3(b)(2) of the Order.

[[Page 1921]]

Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.)
    This rule does not contain collections of information that require 
approval by the Office of Management and Budget (OMB) under the 
Paperwork Reduction Act. This rule will not impose recordkeeping or 
reporting requirements on State or local governments, individuals, 
businesses, or organizations. An agency may not conduct or sponsor and 
a person is not required to respond to a collection of information 
unless it displays a currently valid OMB control number.
National Environmental Policy Act (42 U.S.C. 4321 et seq.)
    We have prepared a final environmental assessment, as defined under 
the authority of the National Environmental Policy Act of 1969. For 
information on how to obtain a copy of the final environmental 
assessment, see ADDRESSES, above. The final environmental assessment 
will also be available on the Internet at http://www.regulations.gov 
and at http://www.fws.gov/midwest/Endangered.
Government-to-Government Relationship With Tribes
    In accordance with the President's memorandum of April 29, 1994 
(Government-to-Government Relations with Native American Tribal 
Governments; 59 FR 22951), Executive Order 13175 (Consultation and 
Coordination With Indian Tribal Governments), and the Department of the 
Interior's manual at 512 DM 2, we readily acknowledge our 
responsibility to communicate meaningfully with recognized Federal 
Tribes on a government-to-government basis. In accordance with 
Secretarial Order 3206 of June 5, 1997 (American Indian Tribal Rights, 
Federal-Tribal Trust Responsibilities, and the Endangered Species Act), 
we readily acknowledge our responsibilities to work directly with 
tribes in developing programs for healthy ecosystems, to acknowledge 
that tribal lands are not subject to the same controls as Federal 
public lands, to remain sensitive to Indian culture, and to make 
information available to tribes.
    In October 2013, Tribes and multi-tribal organizations were sent 
letters inviting them to begin consultation and coordination with the 
service on the proposal to list the northern long-eared bat. In August 
2014, several Tribes and multi-tribal organizations were sent an 
additional letter regarding the Service's intent to extend the deadline 
for making a final listing determination by 6 months. A conference call 
was also held with Tribes to explain the listing process and discuss 
any concerns. Following publication of the proposed rule, the Service 
established three interagency teams (biology of the northern long-eared 
bat, non-WNS threats, and conservation measures) to ensure that States, 
Tribes, and other Federal agencies were able to provide input into 
various aspects of the listing rule and potential conservation measures 
for the species. Invitations for inclusion in these teams were sent to 
Tribes within the range of the northern long-eared bat and a few tribal 
representatives participated on those teams. Two additional conference 
calls (in January and March 2015) were held with Tribes to outline the 
proposed species-specific 4(d) rule and to answer questions. Through 
this coordination, some Tribal representatives expressed concern about 
how listing the northern long-eared bat may impact forestry practices, 
housing development programs, and other activities on Tribal lands.

References Cited

    A complete list of references cited in this document is available 
on the Internet at http://www.regulations.gov and upon request from the 
Twin Cities Ecological Services Field Office (see FOR FURTHER 
INFORMATION CONTACT).

Authors

    The primary authors of this document are the staff members of the 
Midwest Region of the U.S. Fish and Wildlife Service.

List of Subjects in 50 CFR Part 17

    Endangered and threatened species, Exports, Imports, Reporting and 
recordkeeping requirements, Transportation.

Regulation Promulgation

    Accordingly, we amend part 17, subchapter B of chapter I, title 50 
of the Code of Federal Regulations, as follows:

PART 17--ENDANGERED AND THREATENED WILDLIFE AND PLANTS

0
1. The authority citation for part 17 continues to read as follows:

    Authority:  16 U.S.C. 1361-1407; 1531-1544; and 4201-4245, 
unless otherwise noted.

0
2. Amend Sec.  17.40 by revising paragraph (o) to read as follows:


Sec.  17.40  Special rules--mammals.

* * * * *
    (o) Northern long-eared bat (Myotis septentrionalis). The 
provisions of this rule are based upon the occurrence of white-nose 
syndrome (WNS), a disease affecting many U.S. bat populations. The term 
``WNS zone'' identifies the set of counties within the range of the 
northern long-eared bat within 150 miles of the boundaries of U.S. 
counties or Canadian districts where the fungus Pseudogymnoascus 
destructans (Pd) or WNS has been detected. For current information 
regarding the WNS zone, contact your local Service ecological services 
field office. Field office contact information may be obtained from the 
Service regional offices, the addresses of which are listed in 50 CFR 
2.2.
    (1) Prohibitions. The following prohibitions apply to the northern 
long-eared bat:
    (i) Purposeful take of northern long-eared bat, including capture, 
handling, or other activities.
    (ii) Within the WNS zone:
    (A) Actions that result in the incidental take of northern long-
eared bats in known hibernacula.
    (B) Actions that result in the incidental take of northern long-
eared bats by altering a known hibernaculum's entrance or interior 
environment if it impairs an essential behavioral pattern, including 
sheltering northern long-eared bats.
    (C) Tree-removal activities that result in the incidental take of 
northern long-eared bats when the activity:
    (1) Occurs within 0.25 mile (0.4 kilometer) of a known 
hibernaculum; or
    (2) Cuts or destroys known occupied maternity roost trees, or any 
other trees within a 150-foot (45-meter) radius from the maternity 
roost tree, during the pup season (June 1 through July 31).
    (iii) Possession and other acts with unlawfully taken northern 
long-eared bats. It is unlawful to possess, sell, deliver, carry, 
transport, or ship, by any means whatsoever, any northern long-eared 
bat that was taken in violation of this section or State laws.
    (iv) Import and export.
    (2) Exceptions from prohibitions. (i) Any person may take a 
northern long-eared bat in defense of his own life or the lives of 
others, including for public health monitoring purposes.
    (ii) Any person may take a northern long-eared bat that results 
from the removal of hazardous trees for the protection of human life 
and property.
    (iii) Any person may take a northern long-eared bat by removing it 
from human structures, but only if the actions comply with all 
applicable State regulations.
    (iv) Purposeful take that results from actions relating to capture, 
handling, and related activities for northern long-eared bats by 
individuals permitted to

[[Page 1922]]

conduct these same activities for other species of bat until May 3, 
2016.
    (v) All of the provisions of Sec.  17.32 apply to the northern 
long-eared bat.
    (vi) Any employee or agent of the Service, of the National Marine 
Fisheries Service, or of a State conservation agency that is operating 
a conservation program pursuant to the terms of a cooperative agreement 
with the Service in accordance with section 6(c) of the Act, who is 
designated by his agency for such purposes, may, when acting in the 
course of his official duties, take northern long-eared bats covered by 
an approved cooperative agreement to carry out conservation programs.
* * * * *

    Dated: January 7, 2016.
Karen Hyun,
Acting Principal Deputy Assistant Secretary for Fish and Wildlife and 
Parks.
[FR Doc. 2016-00617 Filed 1-13-16; 8:45 am]
BILLING CODE 4333-15-P



                                                1900              Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations

                                                Synopsis                                                of the CFR—‘‘Experimental Radio                        Bloomington, MN 55425; telephone
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                                                unless it displays a current, valid OMB                 License, including testing of radio                    device for the deaf (TDD) may call the
                                                Control Number. No person shall be                      frequency equipment in an Open Area                    Federal Information Relay Service
                                                subject to any penalty for failing to                   Test Site.                                             (FIRS) at 800–877–8339.
                                                comply with a collection of information                 Federal Communications Commission.                     SUPPLEMENTARY INFORMATION:
                                                subject to the Paperwork Reduction Act                  Sheryl Todd,
                                                                                                                                                               Executive Summary
                                                that does not display a current, valid                  Deputy Secretary.
                                                OMB Control Number. The OMB                             [FR Doc. 2015–33250 Filed 1–13–16; 8:45 am]
                                                                                                                                                                  The need for the regulatory action
                                                Control Number is 3060–0065. The                                                                               and how the action will meet that need:
                                                                                                        BILLING CODE 6712–01–P
                                                foregoing notice is required by the                                                                            Consistent with section 4(d) of the Act,
                                                Paperwork Reduction Act of 1995,                                                                               this final 4(d) rule provides measures
                                                Public Law 104–13, October 1, 1995,                                                                            that are tailored to our current
                                                                                                        DEPARTMENT OF THE INTERIOR                             understanding of the conservation needs
                                                and 44 U.S.C. 3507.
                                                   The total annual reporting burdens                   Fish and Wildlife Service                              of the northern long-eared bat.
                                                and costs for the respondents are as                                                                              On April 2, 2015, we published a
                                                follows:                                                50 CFR Part 17                                         document that is both a final rule to list
                                                   OMB Control Number: 3060–0065.                                                                              the northern long-eared bat as a
                                                   OMB Approval Date: December 17,                      [Docket No. FWS–R5–ES–2011–0024;                       threatened species and an an interim
                                                2015.                                                   4500030113]                                            4(d) rule to provide measures that are
                                                   OMB Expiration Date: December 31,                    RIN 1018–AY98                                          necessary and advisable to provide for
                                                2018.                                                                                                          the conservation of the northern long-
                                                   Title: Radio Experimentation and                     Endangered and Threatened Wildlife                     eared bat. At that time, we opened a 90-
                                                Market Trials—Streamlining Rules.                       and Plants; 4(d) Rule for the Northern                 day public comment period on the
                                                   Form Number: FCC Form 442.                           Long-Eared Bat                                         interim rule, and we committed to
                                                   Respondents: Business or other for-                                                                         publish a final 4(d) rule by December
                                                                                                        AGENCY:   Fish and Wildlife Service,
                                                profit entities; not-for-profit institutions,                                                                  31, 2015, and to complete review
                                                                                                        Interior.
                                                and individuals or household.                                                                                  pursuant to the National Environmental
                                                   Number of Respondents and                            ACTION: Final rule.                                    Policy Act (NEPA). Previously, on
                                                Responses: 495 respondents; 560                         SUMMARY:    We, the U.S. Fish and                      January 16, 2015, we published a
                                                responses.                                              Wildlife Service (Service), finalize a rule            proposed 4(d) rule with a 60-day public
                                                   Estimated Time per Response: 4                       under authority of section 4(d) of the                 comment period. Therefore,we have had
                                                hours.                                                  Endangered Species Act of 1973 (Act),                  two comment periods totaling 150 days
                                                   Frequency of Response: On-occasion                   as amended, that provides measures that                on two versions of the 4(d) rule.
                                                reporting requirements; recordkeeping                   are necessary and advisable to provide                    Statement of legal authority for the
                                                requirements; and third party                           for the conservation of the northern                   regulatory action: Under section 4(d) of
                                                disclosure.                                             long-eared bat (Myotis septentrionalis), a             the Act, the Secretary of the Interior has
                                                   Obligation to Respond: Required to                   bat species that occurs in 37 States, the              discretion to issue such regulations she
                                                obtain or retain benefits. The statutory                District of Columbia, and 13 Canadian                  deems necessary and advisable to
                                                authority for this information collection               Provinces.                                             provide for the conservation of the
                                                is contained in sections 47 U.S.C.                                                                             species. The Secretary also has the
                                                Sections 4, 302, 303, 306, and 307 of the               DATES:  This rule is effective February                discretion to prohibit by regulation,
                                                Communications Act of 1934, as                          16, 2016.                                              with respect to a threatened species, any
                                                amended.                                                ADDRESSES: This final 4(d) rule, the final             act prohibited by section 9(a)(1) of the
                                                   Total Annual Burden: 3,049 hours.                    environmental assessment, biological                   Act.
                                                   Total Annual Cost: $41,600.                          opinion, and list of references are                       Summary of the major provisions of
                                                   Nature and Extent of Confidentiality:                available on the Internet at http://                   the regulatory action: This final species-
                                                There is no need for confidentiality,                   www.regulations.gov under Docket No.                   specific 4(d) rule prohibits purposeful
                                                except for personally identifiable                      FWS–R5–ES–2011–0024 and at http://                     take of northern long-eared bats
                                                information individuals may submit,                     www.fws.gov/midwest/Endangered.                        throughout the species’ range, except in
                                                which is covered by a system of records,                Comments and materials we received, as                 instances of removal of northern long-
                                                FCC/OET–1, ‘‘Experimental Radio                         well as supporting documentation we                    eared bats from human structures,
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                                                Station License Files,’’ 71 FR 17234,                   used in preparing this final 4(d) rule, are            defense of human life (including public
                                                April 6, 2006.                                          available for public inspection at                     health monitoring), removal of
                                                   Privacy Act: No impact(s).                           http://www.regulations.gov, and by                     hazardous trees for protection of human
                                                   Needs and Uses: On January 31, 2013,                 appointment, during normal business                    life and property, and authorized
                                                the Commission adopted a Report and                     hours at: U.S. Fish and Wildlife Service,              capture and handling of northern long-
                                                Order, in ET Docket No. 10–236 and 06–                  Twin Cities Ecological Services Field                  eared bats by individuals permitted to
                                                155; FCC 13–15, which updates part 5                    Office, 4101 American Blvd. East,                      conduct these same activities for other


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                                                                  Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations                                           1901

                                                bats until May 3, 2016. After May 3,                    detailed description of previous Federal                  The Act and its implementing
                                                2016, individuals who wish to capture                   actions concerning this species. On                    regulations (50 CFR part 17) define take
                                                and handle northern long-eared bats for                 January 16, 2015, we published a                       as harass, harm, pursue, hunt, shoot,
                                                recovery purposes will need a permit                    proposed 4(d) rule (80 FR 2371) for the                wound, kill, trap, capture or collect, or
                                                pursuant to section 10(a)(1)(A) of the                  northern long-eared bat and on April 2,                to attempt to engage in any such
                                                Act.                                                    2015, we published an interim 4(d) rule                conduct.
                                                   Incidental take resulting from                       (80 FR 17974) for this species.                           The term ‘‘harass’’ (50 CFR 17.3)
                                                otherwise lawful activities will not be                                                                        means an intentional or negligent act or
                                                prohibited in areas not yet affected by                 Background
                                                                                                                                                               omission which creates the likelihood of
                                                white-nose syndrome (WNS). WNS is a                        The northern long-eared bat is a wide-              injury to wildlife by annoying it to such
                                                fungal disease affecting many                           ranging species that is found in a variety             an extent as to significantly disrupt
                                                hibernating U.S. bat species. Ninety- to                of forested habitats in summer and                     normal behavioral patterns which
                                                one-hundred-percent mortality has been                  hibernates in caves, mines, and other                  include, but are not limited to, breeding,
                                                seen in bats affected by the disease in                 locations in winter. WNS is the main                   feeding, or sheltering.
                                                the eastern United States.                              threat to this species and has caused a                   The term ‘‘harm’’ (50 CFR 17.3) means
                                                   Take of northern long-eared bats in                  precipitous decline in bat numbers (in                 an act which actually kills or injures
                                                their hibernacula (which includes caves,                many cases, 90–100 percent) where the                  wildlife. Such act may include
                                                mines, and other locations where bats                   disease has occurred. Declines in the                  significant habitat modification or
                                                hibernate in winter) is prohibited in                   numbers of northern long-eared bats are                degradation where it actually kills or
                                                areas affected by WNS, unless permitted                 expected to continue as WNS extends                    injures wildlife by significantly
                                                under section 10(a)(1)(A) of the Act.                   across the species’ range. For more                    impairing essential behavioral patterns,
                                                Take of northern long-eared bats inside                 information on the northern long-eared                 including breeding, feeding or
                                                of hibernacula may include disturbing                   bat, its habitat, and WNS, please refer to             sheltering.
                                                or disrupting hibernating individuals                   the October 2, 2013, proposed listing (78                 ‘‘Purposeful take’’ includes the
                                                when they are present as well as the                    FR 61046) and the April 2, 2015, final                 capture and handling of individual bats.
                                                physical or other alteration of the                     listing (80 FR 17974) rules.                           Take in this manner includes both
                                                hibernaculum’s entrance or
                                                                                                           The Act (16 U.S.C. 1531 et seq.) does               capture and handling to remove bats
                                                environment when bats are not present
                                                                                                        not specify particular prohibitions, or                from human structures and take that is
                                                if the result of the activity will impair
                                                                                                        exceptions to those prohibitions, for                  for research purposes (e.g., attaching a
                                                essential behavioral patterns, including
                                                                                                        threatened species. Instead, under                     radiotracking device). Other purposeful
                                                sheltering northern long-eared bats.
                                                   For northern long-eared bats outside                 section 4(d) of the Act, the Secretary of              take would include intentional removal
                                                of hibernacula, we have established                     the Interior has the discretion to issue               of bats from hibernacula or the
                                                separate prohibitions from take for                     such regulations as she deems necessary                intentional killing or harassing of bats
                                                activities involving tree removal and                   and advisable to provide for the                       under any circumstance.
                                                activities that do not involve tree                     conservation of such species. The                         ‘‘Human structures’’ are defined as
                                                removal. Incidental take of northern                    Secretary also has the discretion to                   houses, garages, barns, sheds, and other
                                                long-eared bats outside of hibernacula                  prohibit by regulation, with respect to                buildings designed for human entry.
                                                resulting from activities other than tree               any threatened wildlife species, any act                  ‘‘Incidental take’’ is defined at 50 CFR
                                                removal is not prohibited. Incidental                   prohibited under section 9(a)(1) of the                17.3 as any taking otherwise prohibited,
                                                take resulting from tree removal is                     Act with respect to endangered species.                if such taking is incidental to, and not
                                                prohibited if it: (1) Occurs within a 0.25              Exercising this discretion under section               the purpose of, an otherwise lawful
                                                mile (0.4 kilometer) radius of known                    4(d) of the Act, the Service developed                 activity. Examples of incidental take (or
                                                northern long-eared bat hibernacula; or                 general prohibitions (50 CFR 17.31) and                non-purposeful take as it is sometimes
                                                (2) cuts or destroys known occupied                     exceptions to those prohibitions (50                   referred to in this rule) include land-
                                                maternity roost trees, or any other trees               CFR 17.32) under the Act that apply to                 management actions, such as
                                                within a 150-foot (45-meter) radius from                most threatened wildlife species.                      implementation of forestry practices,
                                                the known maternity tree during the                        In addition, for threatened species,                where bats may be harmed, harassed, or
                                                pup season (June 1 through July 31).                    under the authority of section 4(d) of the             killed as a result of those otherwise
                                                Incidental take of northern long-eared                  Act, the Service may develop                           lawful actions. The actions
                                                bats as a result of the removal of                      prohibitions and exceptions that are                   contemplated in this rule include a
                                                hazardous trees for the protection of                   tailored to the specific conservation                  wide range of actions for purposes such
                                                human life and property is also not                     needs of the species. In such cases,                   as right-of-way development and
                                                prohibited.                                             some of the prohibitions and                           maintenance, forestry, land use for
                                                   Peer review and public comment: We                   authorizations under 50 CFR 17.31 and                  development unrelated to wildlife
                                                sought comments on our proposed 4(d)                    17.32 may be appropriate for the species               management, management of lands as
                                                rule from independent specialists to                    and be incorporated into a separate,                   habitats other than bat habitat (e.g.,
                                                ensure that this rule is based on                       species-specific, rule under section 4(d)              prairie), energy production and
                                                scientifically sound data, assumptions,                 of the Act. These rules will also include              transmission, and other activities.
                                                and analyses. We also considered all                    provisions that are tailored to the                       Incidental take within the context of
                                                comments and information we received                    specific conservation needs of the                     this rule is regulated in distinct and
                                                during the comment periods on the                       threatened species and may be more or                  separate manners relative to the
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                                                proposed and interim 4(d) rules.                        less restrictive than the general                      geographic location of the activity in
                                                                                                        provisions at 50 CFR 17.31.                            question. For the purposes of this rule,
                                                Previous Federal Actions                                                                                       we have developed a map associated
                                                                                                        Definitions
                                                  Please refer to the proposed (78 FR                                                                          with the occurrence and spread of WNS.
                                                61046; October 2, 2013) and final (80                      This final rule uses several definitions            This map will be updated by the first of
                                                FR17974; April 2, 2015) listing rules for               and provisions contained in the Act and                each month as the disease spreads
                                                the northern long-eared bat for a                       its implementing regulations.                          throughout the range of the species and


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                                                1902              Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations

                                                posted at http://www.fws.gov/midwest/                   Comments and Recommendations                           activities for other bat species until May
                                                Endangered.                                             below), we revised the provisions of the               3, 2016. After May 3, 2016, a permit
                                                   ‘‘Known hibernacula’’ are defined as                 interim 4(d) rule to better reflect the                pursuant to section 10(a)(1)(A) of the
                                                locations where northern long-eared                     disproportionate effect that the disease,              Act is required for the capture and
                                                bats have been detected during                          WNS, has had and will continue to                      handling of northern long-eared bats.
                                                hibernation or at the entrance during                   have, we believe, on northern long-                    Under this rule, incidental take is still
                                                fall swarming or spring emergence.                      eared bat populations.                                 not prohibited outside the WNS zone.
                                                   ‘‘Known, occupied maternity roost                       In the interim rule, we used the term                  We have revised the interim rule’s
                                                trees’’ are defined as trees that have had              ‘‘white-nose syndrome buffer zone’’ to                 language concerning incidental take
                                                female northern long-eared bats or                      identify ‘‘the portion of the range of the             inside the WNS zone. Under this final
                                                juvenile bats tracked to them or the                    northern long-eared bat’’ within 150                   rule, within the WNS zone, incidental
                                                presence of females or juveniles is                     miles (241 km) of the boundaries of U.S.               take is prohibited only if: (1) Actions
                                                known as a result of other methods.                     counties or Canadian districts where the               result in the incidental take of northern
                                                   ‘‘Tree removal’’ is defined as cutting               fungus Pseudogymnoascus destructans                    long-eared bats in hibernacula; (2)
                                                down, harvesting, destroying, trimming,                 (Pd) or WNS had been detected. For                     actions result in the incidental take of
                                                or manipulating in any other way the                    purposes of clarification, in this final               northern long-eared bats by altering a
                                                trees, saplings, snags, or any other form               rule, we have changed the term ‘‘white-                known hibernaculum’s entrance or
                                                of woody vegetation likely to be used by                nose syndrome buffer zone’’ to ‘‘white-                interior environment if the alteration
                                                northern long-eared bats.                               nose syndrome zone’’ or ‘‘WNS zone.’’                  impairs an essential behavioral pattern,
                                                WNS Zone                                                And we state that the ‘‘WNS zone’’ is                  including sheltering northern long-eared
                                                                                                        ‘‘the set of counties within the range of              bats; or (3) tree-removal activities result
                                                  The WNS zone, as mapped, provides                     the northern long-eared bat’’ within 150               in the incidental take of northern long-
                                                the boundary for the distinction of                     miles (241 km) of the boundaries of U.S.               eared bats when the activity either
                                                implementation of this rule. To estimate                counties or Canadian districts where Pd                occurs within 0.25 mile (0.4 kilometer)
                                                the area impacted by WNS, we have                       or WNS had been detected.                              of a known hibernaculum, or cuts or
                                                used data on the presence of the fungus                    The interim 4(d) rule generally                     destroys known occupied maternity
                                                causing the disease, called                             applies the prohibitions of 50 CFR 17.31               roost trees, or any other trees within a
                                                Pseudogymnoascus destructans, or Pd,                    and 17.32 to the northern long-eared                   150-foot (45-meter) radius from the
                                                or evidence of the presence of the                      bat, which means that the interim rule,                maternity roost tree, during the pup
                                                disease (WNS) in the bats within a                      among other things, prohibits the                      season (June 1 through July 31). Take of
                                                hibernaculum. Our final listing                         purposeful take of northern long-eared                 northern long-eared bats in their
                                                determination provides additional                       bats throughout the species’ range, but                hibernacula may include disturbing or
                                                information concerning Pd and WNS                       the interim rule includes exceptions to                disrupting hibernating individuals
                                                (80 FR 17993; April 2, 2015). Confirmed                 the purposeful take prohibition. The                   when they are in the hibernacula. Take
                                                evidence of infection at a location                     exceptions for purposeful take are: (1) In             of northern long-eared bat also includes
                                                within a county is mapped as a positive                 instances of removal of northern long-                 the physical or other alteration of the
                                                detection for the entire county. In                     eared bats from human structures (if                   hibernaculum’s entrance or
                                                addition, we have added a 150-mile                      actions comply with all applicable State               environment when bats are not present
                                                (241-kilometer (km)) buffer to the Pd-                  regulations); and (2) for authorized                   if the result of the activity will impair
                                                positive county line to account for the                 capture, handling, and related activities              essential behavioral patterns, including
                                                spread of the fungus from one year to                   of northern long-eared bats by                         sheltering northern long-eared bats. Any
                                                the next. In instances where the 150-                   individuals permitted to conduct these                 take resulting from otherwise lawful
                                                mile (241-km) buffer line bisects a                     same activities for other bat species                  activities outside known hibernacula,
                                                county, the entire county is included in                until May 3, 2016. Under the interim                   other than tree removal, is not
                                                the WNS zone.                                           rule, incidental take is not prohibited                prohibited, as long as it does not change
                                                  Over the past 5 years, an average of                  outside the WNS zone if the incidental                 the bat’s access to or quality of a known
                                                96 percent of the new Pd or WNS                         take results from otherwise lawful                     hibernaculum for the species. This final
                                                counties in any single year were within                 activities. Inside the WNS zone, there                 rule makes these revisions because, in
                                                150 miles (241 km) of a county that was                 are exceptions for incidental take for the             areas impacted by WNS, the most
                                                Pd- or WNS-positive in a prior year                     following activities, subject to certain               important conservation actions for the
                                                (Service 2015, unpublished data). Pd is                 conditions: Implementation of forest                   northern long-eared bat are to protect
                                                generally present for a year or two                     management; maintenance and                            bats in hibernacula and maternity roost
                                                before symptoms of WNS appear and                       expansion of existing rights-of-way and                trees, and to continue to monitor
                                                mortality of bats begins to occur. Given                transmission corridors; prairie                        populations in summer habitat (e.g.,
                                                the relatively short amount of time                     management; minimal tree removal; and                  identify where the species continues to
                                                between detection and population-level                  removal of hazardous trees for the                     survive after the detection of Pd or WNS
                                                impacts, it is important that we protect                protection of human life and property.                 and determine the factors influencing its
                                                those buffer areas and the bats within                     This final 4(d) rule does not generally             resilience), while developing methods
                                                them with the same regulations as those                 apply the prohibitions of 50 CFR 17.31                 to abate WNS as quickly as possible.
                                                in known WNS positive counties.                         to the northern long-eared bat. This rule                 Under this rule, we individually set
                                                Therefore, the positive counties, plus a                continues to prohibit purposeful take of               forth prohibitions on possession and
                                                buffer around them, are the basis for the               northern long-eared bats throughout the                other acts with unlawfully taken
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                                                WNS zone map.                                           species’ range, except in certain cases,               northern long-eared bats, and on import
                                                                                                        including instances of removal of                      and export of northern long-eared bats.
                                                Summary Comparison of the Interim                       northern long-eared bats from human                    These prohibitions were included in the
                                                4(d) Rule and This Final Rule                           structures and for authorized capture,                 interim 4(d) through the general
                                                  Based on information we received in                   handling, and related activities of                    application of the prohibitions of 50
                                                comment periods on the proposed and                     northern long-eared bats by individuals                CFR 17.31 to the northern long-eared
                                                interim 4(d) rules (see Summary of                      permitted to conduct these same                        bat. Under this rule, take of the northern


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                                                                  Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations                                          1903

                                                long-eared bat is also not prohibited for               may be infected with rabies or other                   handling of northern long-eared
                                                the following: Removal of hazardous                     diseases that can be transmissible to                  bats,except that associated with bat
                                                trees for protection of human life and                  humans. When there is the possibility                  removal from human structures. We
                                                property; take in defense of life; and                  that a person has been exposed to a                    determined that it was important to
                                                take by an employee or agent of the                     diseased bat, it is important that they                regulate the intentional capture and
                                                Service, of the National Marine                         coordinate with medical professionals                  handling of northern long-eared bats
                                                Fisheries Service, or of a State                        (e.g., doctor, local health department) to             through the Act’s scientific permit
                                                conservation agency that is operating a                 determine the appropriate response.                    process to help ensure that the
                                                conservation program pursuant to the                    When warranted to protect human                        surveyor’s qualifications and methods
                                                terms of a cooperative agreement with                   health and safety, we have exempted                    used are adequate to protect individual
                                                the Service. Regarding these three                      from the take prohibition of northern                  bats and provide reliable survey results.
                                                exceptions, take in defense of life was                 long-eared bats in defense of one’s own
                                                                                                                                                               Incidental Take Outside of the WNS
                                                not included in the interim 4(d) rule,                  life or the lives of others, including for
                                                                                                                                                               Zone Not Prohibited
                                                but the other two exceptions were,                      public health monitoring purposes (i.e.,
                                                either through the general application of               collecting a bat after human exposure                     Incidental take in areas that have not
                                                50 CFR 17.31 or through a specific                      and submitting for disease testing).                   yet been impacted by WNS (i.e., in areas
                                                exception included in the interim 4(d)                     We have also exempted the                           outside the WNS zone) is not prohibited
                                                rule.                                                   purposeful take of northern long-eared                 by this final rule. We believe the level
                                                                                                        bats related to removing the species                   of take associated with on-going land
                                                Provisions of the 4(d) Rule for the                     from human structures, but only if the                 management and development actions,
                                                Northern Long-Eared Bat                                 actions comply with all applicable State               including all actions that may
                                                   For a threatened species, the Act does               regulations. Northern long-eared bats                  incidentally take the northern long-
                                                not specify prohibitions, or exceptions                 have occasionally been documented                      eared bat, do not individually or
                                                to those prohibitions, relative to take of              roosting in human-made structures,                     cumulatively affect healthy bat
                                                the species. Instead, under Section 4(d)                such as houses, barns, pavilions, sheds,               populations. As noted in our decision to
                                                of the Act, the Secretary has discretion                cabins, and bat houses (Mumford and                    list the northern long-eared bat as a
                                                to issue regulations deemed to be                       Cope 1964, p. 480; Barbour and Davis                   threatened species, WNS is the primary
                                                necessary and advisable for the                         1969, p. 77; Cope and Humphrey 1972,                   cause of the species’ decline, and we
                                                conservation of a threatened species. By                p. 9; Amelon and Burhans 2006, p. 72;                  would not have listed the northern long-
                                                regulation, the Secretary has determined                Whitaker and Mumford 2009, p. 209;                     eared bat if not for the impact of WNS.
                                                that take prohibitions for endangered                   Timpone et al. 2010, p. 119; Joe Kath                  In addition, we conclude that regulating
                                                species are also applicable to threatened               2013, pers. comm.). We conclude that                   incidental take in areas not affected by
                                                species unless a special rule is issued                 the overall impact of bat removal from                 WNS is not expected to change the rate
                                                under section 4(d) for a particular                     human structures is not expected to                    at which WNS progresses across the
                                                threatened species. Under this 4(d) rule,               adversely affect conservation and                      range of the species. In other words,
                                                we have applied several of the                          recovery efforts for the species. In                   regulating incidental take outside the
                                                prohibitions specified in the Act for                   addition, we provide the following                     WNS zone will not influence the future
                                                endangered species and the provisions                   recommendations:                                       impact of the disease throughout the
                                                of 50 CFR 17.32 (permit regulations) to                    • Minimize use of pesticides (e.g.,                 species’ range or the status of the
                                                the northern long-eared bat as described                rodenticides) and avoid use of sticky                  species. For these reasons, we have
                                                below.                                                  traps as part of bat evictions/exclusions.             concluded that the prohibition of
                                                   For this 4(d) rule, the Service has                     • Conduct exclusions during spring                  incidental take outside of the WNS zone
                                                completed a biological opinion under                    or fall unless there is a perceived public             is not necessary and advisable for the
                                                Section 7 of the Act on our action of                   health concern from bats present during                protection and recovery of the species.
                                                finalizing this rule. In addition, the                  summer and/or winter.                                  Incidental take, therefore, is not
                                                biological opinion provides for                            • Contact a nuisance wildlife                       prohibited outside of the WNS zone.
                                                streamlined consultation for all federal                specialist for humane exclusion
                                                agency actions that may affect the                      techniques.                                            Prohibitions and Exemptions Related to
                                                northern long-eared bat; therefore, the                    We have exempted the purposeful                     Incidental Take Inside the WNS Zone
                                                scope of the biological opinion included                take that results from actions relating to                Our approach to designing the
                                                the finalization and implementation of                  capture, handling, and related activities              regulatory provisions for the northern
                                                the 4(d) rule. The biological opinion                   for northern long-eared bats by                        long-eared bat inside the WNS zone
                                                resulted in a non-jeopardy                              individuals permitted to conduct these                 reflects the significant role WNS plays
                                                determination. Provided Federal action                  same activities for other species of bats              as the central threat affecting the
                                                agencies follow the criteria outlined in                until May 3, 2016. Under the interim                   species. For other threatened species,
                                                this rule and implement the streamlined                 rule, for a period of 1 year from the                  habitat loss or other limiting factors
                                                consultation process outlined in the                    interim rule’s effective date (May 3,                  usually contribute to the decline of a
                                                biological opinion, their section 7                     2016), we had exempted the purposeful                  species. In these situations, regulations
                                                consultation requirements will be met.                  take that is caused by the authorized                  are needed to address either the habitat
                                                If unable to follow these criteria,                     capture, handling, and related activities              loss or the other limiting factors.
                                                standard section 7 procedures will                      (e.g., attachment of radio transmitters                   The northern long-eared bat is not
                                                apply.                                                  for tracking) of northern long-eared bats              habitat-limited and has demonstrated a
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                                                                                                        by individuals permitted to conduct                    great deal of plasticity within its
                                                Exceptions to the Purposeful Take                       these same activities for other bats. We               environment (e.g., living in highly
                                                Prohibition                                             have continued the exemption through                   fragmented forest habitats to contiguous
                                                  We have exempted the purposeful                       the expiration date established by the                 forest blocks from the southern United
                                                take of northern long-eared bats related                interim rule. After May 3, 2016, a permit              States to Canada’s Yukon Territory) in
                                                to the protection of human health and                   pursuant to section 10(a)(1)(A) of the                 the absence of WNS. For the northern
                                                safety. A very small percentage of bats                 Act is required for the capture and                    long-eared bat, land management and


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                                                1904              Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations

                                                development actions that have been on-                  response to a potential stressor are                   disturbance or disease. Because of this
                                                going for centuries (e.g., forest                       critical considerations in evaluating the              complex interplay of hibernacula
                                                management, forest conversion) have                     potential for incidental take to occur.                characteristics and bat physiology,
                                                not been shown to have significant                      For example, under the discussion of                   changes to hibernacula can significantly
                                                negative impacts to northern long-eared                 tree removal, below, we describe what                  impact their suitability as well as the
                                                bat populations.                                        is prohibited by the final 4(d) rule in the            survival of any hibernating bats.
                                                   As WNS continues to move across the                  WNS zone and provide examples of                          In general, northern long-eared bats
                                                range of the species, northern long-eared               how other activities could be                          arrive at hibernacula in August or
                                                bat populations have declined and will                  implemented in a way that avoids the                   September, enter hibernation in October
                                                continue to decline. Declines in                        potential for incidental take.                         and November, and emerge from the
                                                northern long-eared bat populations in                                                                         hibernacula in March or April (Caire et
                                                WNS-positive regions have been                          Hibernacula                                            al. 1979, p. 405; Whitaker and Hamilton
                                                significant, and northern long-eared bats                  Northern long-eared bats                            1998, p. 100; Amelon and Burhans
                                                are now relatively rare on those                        predominantly overwinter in                            2006, p. 72). However, hibernation may
                                                landscapes. As populations decline as a                 hibernacula that include caves and                     begin as early as August (Whitaker and
                                                result of WNS, the chances of any                       abandoned mines. For additional details                Rissler 1992b, p. 56). Northern long-
                                                particular activity affecting northern                  about the characteristics of the                       eared bats have been observed moving
                                                long-eared bats becomes more remote.                    hibernacula selected by northern long-                 among hibernacula throughout the
                                                Therefore, in the WNS zone, we focused                  eared bats, see the final listing                      winter (Griffin 1940a, p. 185; Whitaker
                                                the regulatory provisions on sensitive                  determination (80 FR 17974; April 2,                   and Rissler 1992a, p. 131; Caceres and
                                                life stages at known, occupied maternity                2015). Northern long-eared bats have                   Barclay 2000, pp. 2–3). Whitaker and
                                                roost trees and hibernacula.                            shown a high degree of philopatry                      Mumford (2009, p. 210) found that this
                                                   We developed regulations that                        (using the same site over multiple years)              species flies in and out of some mines
                                                provide some level of protection to the                 for a hibernaculum (Pearson 1962, p.                   and caves in southern Indiana
                                                species where it persists in the face of                30), although they may not return to the               throughout the winter.
                                                WNS. However, we have provided                          same hibernaculum in successive                           Human disturbance of hibernating
                                                flexibility so that the regulated public                seasons (Caceres and Barclay 2000, p.                  bats has long been considered a threat
                                                will seek to conserve the species and                   2).                                                    to cave-hibernating bat species like the
                                                foster its recovery at sites where it has                  Hibernacula are so significant to the               northern long-eared bat. Modifications
                                                been lost should tools to address WNS                   northern long-eared bat that they are                  to bat hibernacula can affect the
                                                become available or where the species                   considered a primary driver in the                     microclimate (e.g., temperature,
                                                shows signs of resilience. Further,                     species distribution (e.g., Kurta 1982, p.             humidity) of the subterranean habitat,
                                                because we believe recovery of this                     302). Northern long-eared bats are                     and thus the ability of the cave or mine
                                                species will require many partnerships                  documented in hibernacula in 29 of the                 to support hibernating bats, including
                                                across the species’ range, minimizing                   37 states in the species’ range. Other                 the northern long-eared bat.
                                                regulatory impacts on activities                        States within the species’ range have no               Anthropogenic modifications to cave
                                                inconsequential to northern long-eared                  known hibernacula, which may reflect                   and mine entrances may not only alter
                                                bat populations provides an important                   that no suitable hibernacula are present,              flight characteristics and access (Spanjer
                                                step in building partnerships for the                   a limited survey effort, or the northern               and Fenton 2005, p. 1110), but may
                                                species’ recovery.                                      long-eared bat’s use of sites not                      change airflow and alter internal
                                                   The northern long-eared bat is a                     previously identified as suitable.                     microclimates of the caves and mines,
                                                forest-dependent species, typically                        In general, bats select hibernacula                 eliminating their utility as hibernacula
                                                roosting in trees. In establishing                      because they have characteristics that                 (Service 2007, p. 71). For example,
                                                regulations that are necessary and                      allow the bats to meet specific life-cycle             Richter et al. (1993, p. 409) attributed
                                                advisable for the conservation of the                   requirements. Factors influencing a                    the decline in the number of Indiana
                                                species, we have tailored species-                      hibernaculum’s suitability include its                 bats at Wyandotte Cave, Indiana (which
                                                specific regulatory provisions toward                   physical structure (e.g., openings,                    harbors one of the largest known
                                                potential impacts to trees. For the                     interior space, depth), air circulation,               population of hibernating Indiana bats
                                                incidental take of bats outside of                      temperature profile, and location                      (Myotis sodalis)), to an increase in the
                                                hibernacula, we have specifically                       relative to foraging sites (Tuttle and                 cave’s temperature resulting from
                                                established two sets of provisions: the                 Stevenson 1978, pp. 108–121).                          restricted airflow caused by a stone wall
                                                first set applies to activities that do not                Overwinter survival can be a                        erected at the cave’s entrance. In
                                                involve tree removal and the second                     particularly challenging period in the                 addition to the direct access
                                                applies to activities that do involve tree              northern long-eared bat’s life cycle.                  modifications to caves discussed above,
                                                removal. By tree removal, we mean                       Hibernating bats appear to balance their               debris buildup at entrances or on cave
                                                cutting down, harvesting, destroying,                   physical condition (e.g., fat reserves                 gates can also significantly modify the
                                                trimming, or manipulating in any other                  upon entering hibernation), hibernacula                cave or mine site characteristics by
                                                way the trees, saplings, snags, or any                  characteristics (e.g., temperature                     restricting airflow and the course of
                                                other form of woody vegetation that is                  variation, humidity), social resources                 natural water flow. Water-flow
                                                likely to be used by the northern long-                 (e.g., roosting singly or in groups), and              restriction could lead to flooding, thus
                                                eared bat.                                              metabolic condition (i.e., degree of                   drowning hibernating bats (Amelon and
                                                   In this final 4(d) rule, we have limited             torpor, which is the state of mental or                Burhans 2006, p. 72). Thomas (1995, p.
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                                                the prohibition of incidental take of                   physical inactivity) to meet overwinter                942) used infrared detectors to measure
                                                northern long-eared bats to specific                    survival needs. The overwinter                         flight activity in hibernating northern
                                                circumstances. This does not mean that                  physiological needs of the species                     long-eared bats and little brown bats in
                                                all activities that could result in the                 include maintaining body temperature                   response to the presence of a human
                                                incidental take of the northern long-                   above freezing, minimizing water loss,                 observer. Flight activity significantly
                                                eared bat will do so. The relative                      meeting energetic needs until prey again               increased with the presence of an
                                                exposure of the species and the species                 become available, and responding to                    observer, beginning within 30 minutes


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                                                                  Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations                                           1905

                                                of the visit, peaking 1.0 to 7.5 hours                  p. 51; Randall and Broders 2014, pp.                   eared bat when considered alone.
                                                later, and remaining significantly above                109–110). The swarming season for                      However, we thought these factors may
                                                baseline level for 2.5 to 8.5 hours. These              some species of the genus Myotis begins                have a cumulative effect on this species
                                                results suggest that hibernating bats are               shortly after females and young depart                 when considered in concert with WNS.
                                                sensitive to non-tactile stimuli and                    maternity colonies (Fenton 1969, p.                    After additional consideration and our
                                                arouse and fly following human visits.                  601). For the northern long-eared bat,                 review of public comments received on
                                                Boyles and Brack’s (2009) model                         the swarming period may occur between                  the proposed and interim 4(d) rules, we
                                                predicted that the survival rate of                     July and early October, depending on                   did not find compelling evidence that
                                                hibernating little brown bats drops from                latitude within the species’ range                     regulating these potential cumulative
                                                96 percent to 73 percent with human                     (Fenton 1969, p. 598; Kurta et al. 1997,               effects would result in significant
                                                visitations to hibernacula. Prior to the                p. 479; Lowe 2012, p. 86; Hall and                     impacts at the species level. Effects to
                                                outbreak of WNS, Amelon and Burhans                     Brenner 1968, p. 780; Caire et al. 1979,               relatively small numbers of individuals
                                                (2006, p. 73) indicated that ‘‘the                      p. 405). The northern long-eared bat                   are not anticipated to impair
                                                widespread recreational use of caves                    may investigate several cave or mine                   conservation efforts or the recovery
                                                and indirect or direct disturbance by                   openings during the transient portion of               potential of the species.
                                                humans during the hibernation period                    the swarming period, and some
                                                                                                                                                               Wind-Energy Facilities
                                                pose the greatest known threat to [the                  individuals may use these areas as
                                                northern long-eared bat].’’                             temporary daytime roosts or may roost                     Wind-energy facilities are found
                                                   Hibernacula and surrounding forest                   in forest habitat adjacent these sites                 scattered throughout the range of the
                                                habitats play important roles in the life               (Kurta et al. 1997, pp. 479, 483; Lowe                 northern long-eared bat, and many new
                                                cycle of the northern long-eared bat                    2012, p. 51). Little is known about                    facilities are anticipated to be
                                                beyond the time when the bats are                       northern long-eared bat roost selection                constructed over the next 15 years
                                                overwintering. In both the early spring                 outside of caves and mines during the                  (United States Department of Energy
                                                and fall, the hibernacula and                           swarming period (Lowe 2012, p. 6).                     2008, unpaginated). We reviewed post-
                                                surrounding forested habitats are the                      Based on the importance of                          construction mortality monitoring
                                                focus of bat activity in two separate                   hibernacula to northern long-eared bats,               studies conducted at various times from
                                                periods referred to as ‘‘spring staging’’               take is prohibited in and around the                   1998 through 2014 at 81 unique
                                                and ‘‘fall swarming.’’                                  hibernacula within the WNS zone,                       operating wind-energy facilities in the
                                                   During the spring staging, bats begin                including activities that may alter the                range of the northern long-eared bat in
                                                to gradually emerge from hibernation,                   hibernacula at any time of the year.                   the United States and Canada (Service
                                                exit the hibernacula to feed, but re-enter              Further, we have determined that when                  2015, unpublished data). In these
                                                the same or alternative hibernacula to                  the conservation measures for the                      studies, 43 northern long-eared bat
                                                resume daily bouts of torpor (Whitaker                  northern long-eared bat included in this               mortalities were documented at 19 of
                                                and Hamilton 1998, p. 100). The staging                 final 4(d) rule are applied to areas                   the sites. The northern long-eared bat
                                                period for the northern long-eared bat is               within 0.25 mile (0.4 km) of the                       fatalities comprised less than 1 percent
                                                likely short in duration (Whitaker and                  hibernacula, the potential for negative                of all documented bat mortalities. In
                                                Hamilton 1998, p. 100; Caire et al. 1979,               impacts to individuals is significantly                most cases, the level of effort for most
                                                p. 405). In Missouri, Caire et al. (1979,               reduced.                                               post-construction monitoring studies is
                                                p. 405) found that northern long-eared                                                                         not sufficient to confidently exclude the
                                                bats moved into the staging period in                   Activities Not Involving Tree Removal                  possibility that infrequent fatalities are
                                                mid-March through early May. In                         Are Not Prohibited                                     being missed, but finding none or only
                                                Michigan, Kurta et al. (1997, p. 478)                      Under this final 4(d) rule, activities              small numbers over many sites and
                                                determined that by early May, two-                      within the WNS zone not involving tree                 years can suggest the order of what may
                                                thirds of the Myotis species, including                 removal are not prohibited provided                    be missed. Thus while sustained
                                                the northern long-eared bat, had                        they do not result in the incidental take              mortality at particular facilities could
                                                dispersed to summer habitat.                            of northern long eared bats in                         potentially cause declines in local
                                                   Beginning in mid to late summer,                     hibernacula or otherwise impair                        populations of the northern long-eared
                                                after their young have gained some level                essential behavioral patterns at known                 bat, if that is in fact occurring, it does
                                                of independence, northern long-eared                    hibernacula. In our final listing                      not appear to be wide-spread at least
                                                bats exhibit a behavior near hibernacula                determination (80 FR 17974; April 2,                   when compared to other bat species
                                                referred to as swarming. Both male and                  2015), we identified a number of                       which are nearly always found in
                                                female northern long-eared bats are                     activities not involving tree removal that             fatality monitoring at wind facilities. At
                                                present at swarming sites (often with                   may have direct or indirect effects on                 those sites with a northern long-eared
                                                other species of bats). During this                     northern long-eared bats. These                        bat fatality where multiple years of
                                                period, heightened activity and                         activities have the potential to cause the             monitoring data were also available for
                                                congregation of transient bats around                   incidental take of northern long-eared                 review (n = 12), fatalities of northern
                                                caves and mines is observed, followed                   bats and include activities such as the                long-eared bats were only reported in
                                                later by increased sexual activity and                  operation of utility-scale wind-energy                 multiple years at two of the sites and for
                                                bouts of torpor prior to winter                         turbines, application of pesticides, and               the other 10 sites only a single fatality
                                                hibernation (Fenton 1969, p. 601;                       prescribed fire (this is not an exhaustive             was reported over multiple years of
                                                Parsons et al. 2003, pp. 63–64; Davis                   list; it is merely representative of                   monitoring. For example, one site
                                                and Hitchcock 1965, pp. 304–306). The                   activities that may result in take of                  reported one northern long-eared bat
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                                                purposes of swarming behavior may                       northern long-eared bats).                             fatality in 2008, but none in 2009, 2010,
                                                include introduction of juveniles to                       At the time of our listing                          or 2011. Further, the number of fatalities
                                                potential hibernacula, copulation, and                  determination and the interim 4(d) rule                of northern long-eared bats found at any
                                                stopping over sites on migratory                        (80 FR 17974; April 2, 2015), we stated                given site has been relatively small (e.g.,
                                                pathways between summer and winter                      that we had no compelling evidence                     most often a single fatality was found,
                                                regions (Kurta et al. 1997, p. 479;                     that these activities would have                       but in all cases no more than six), and
                                                Parsons et al. 2003, p. 64; Lowe 2012,                  significant effects on the northern long-              typically most sites (62 out of 81) found


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                                                1906              Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations

                                                no northern long-eared bat fatalities at                information does not indicate                          commonly polybrominated diphenyl
                                                all. There is a great deal of uncertainty               significant impacts to northern long-                  ethers (PDBEs; 100 percent of samples),
                                                related to extrapolating these numbers                  eared bats from such operations. We                    salicylic acid (81 percent),
                                                to generate an estimate of total northern               conclude that there may be adverse                     thiabendazole (50 percent), and caffeine
                                                long-eared bat mortality at wind-energy                 effects posed by wind-energy                           (23 percent). Digoxigenin, ibuprofen,
                                                facilities due to variability in post-                  development to individual northern                     warfarin, penicillin V, testosterone, and
                                                construction survey effort and                          long-eared bats; however, there is no                  N,N-diethyl-meta-toluamide (DEET)
                                                methodology (Huso and Dalthorp 2014,                    evidence suggesting that effects from                  were also present in at least 15 percent
                                                pp. 546–547). Further, bat mortality can                wind-energy development has led to                     of samples. Compounds with the
                                                vary between years and between sites,                   significant declines in this species, nor              highest concentrations were bisphenol
                                                and detected carcasses are only a small                 is there evidence that regulating the                  A (397 ng/g), PDBE congeners 28, 47,
                                                percentage of total bat mortalities.                    incidental take that is occurring would                99, 100, 153, and 154 (83.5 ng/g),
                                                However, even with those limitations,                   meaningfully change the conservation                   triclosan (71.3 n/g), caffeine (68.3 ng/g),
                                                northern long-eared bats were rarely                    or recovery potential of the species in                salicylic acid (66.4 ng/g), warfarin (57.6
                                                detected as mortalities, even when they                 the face of WNS. Furthermore, with the                 ng/g), sulfathiazole (55.8 ng/g), tris(1-
                                                were known to be common on the                          adoption by wind-energy facilities of the              chloro-2-propyl) phosphate (53.8 ng/g),
                                                landscape around the wind-energy                        new voluntary standards, risk to all bats,             and DEET (37.2 ng/g).
                                                facility.                                               including the northern long-eared bat,                    Although there is the potential for
                                                   We recognize that several wind                       should be further reduced.                             direct and indirect contaminant-related
                                                energy facilities have completed, or are
                                                                                                        Environmental Contaminants                             effects, mortality or other population-
                                                currently working to complete, habitat
                                                                                                           Environmental contaminants, in                      level impacts have not been reported for
                                                conservation plans (HCPs; permit
                                                                                                        particular insecticides, pesticides, and               northern long-eared bats. Long-term
                                                pursuant to section 10(a)(1)(B) of the
                                                                                                        inorganic contaminants, such as                        sublethal effects of environmental
                                                Act) for other listed bat species where
                                                                                                        mercury and lead, may also have                        contaminants on bats are largely
                                                the number of fatalities reported is also
                                                                                                        detrimental effects on individual                      unknown; however, environmentally
                                                very low. When the take of an
                                                                                                        northern long-eared bats. However,                     relevant exposure levels of various
                                                endangered species is reasonably certain
                                                                                                        across the wide-range of the species, it               contaminants have been shown to
                                                to occur, we recommend that a project
                                                                                                        is unclear whether environmental                       impair nervous system, endocrine, and
                                                proponent secure incidental take
                                                coverage pursuant to section 10 of the                  contaminants, regardless of the source                 reproductive functioning in other
                                                Act. Over the operational life of a wind                (e.g., pesticide applications, industrial              wildlife (Yates et al. 2014, p. 52; Köhler
                                                energy facility (typically anticipated to               waste-water), would be expected to                     and Triebskorn 2013, p. 761; Colborn et
                                                be at least 20 to 30 years), the take of                cause population-level impacts to the                  al. 1993, p. 378). Moreover, bats’ high
                                                listed species may be reasonably certain                northern long-eared bat either                         metabolic rates, longevity, insectivorous
                                                to occur, even if the level of mortalities              independently or in concert with WNS.                  diet, migration-hibernation patterns of
                                                annually is anticipated to be quite low.                Historically, the most intensively-                    fat deposition and depletion, and
                                                However, this does not mean that                        studied contaminants in bats have been                 immune impairment during
                                                prohibiting that incidental take in the                 the organochlorine insecticides (OCs;                  hibernation, along with potentially
                                                case of a threatened species is necessary               O’Shea and Clark 2002, p. 238). During                 exacerbating effects of WNS, likely
                                                and advisable for the conservation of                   wide-spread use of OCs in the 1960s                    increase their risk of exposure to and
                                                such a species. For the northern long-                  and 1970s, lethal pesticide poisoning                  accumulation of environmental toxins
                                                eared bat, we do not anticipate that the                was demonstrated in gray bats (Myotis                  (Secord et al. 2015, p. 411, Yates et al.
                                                fatalities that will be caused by wind                  grisescens), Mexican free-tailed bats                  2014, p. 46, Geluso et al. 1976, p. 184;
                                                energy would meaningfully change the                    (Tadarida brasiliensis), and Indiana bats              Quarles 2013, p. 4, O’Shea and Clark
                                                species’ status in the foreseeable future.              (Myotis sodalis) (O’Shea and Clark 2002,               2002, p. 238). Following WNS-caused
                                                   In addition, the wind industry has                   p. 239, 242). Since the phasing out of                 population declines in northeastern
                                                recently published best management                      OCs in the United States, the effects of               little brown bats, Kannan et al. (2010)
                                                practices establishing voluntary                        chemical contaminants on bats have                     investigated whether exposure to toxic
                                                operating protocols, which they expect                  been less well studied (O’Shea and                     contaminants could be a contributing
                                                ‘‘to reduce impacts to bats from                        Johnston 2009, p. 501); however, a few                 factor in WNS-related mortality.
                                                operating wind turbines by as much as                   recent studies have demonstrated the                   Although high concentrations of
                                                30 percent’’ (AWEA 2015, unpaginated).                  accumulation of potentially toxic                      polychlorinated biphenyls (PCBs),
                                                Given the large numbers of other bat                    elements and chemicals in North                        PBDEs, polybrominated biphenyls
                                                species impacted by wind energy (Hein                   American bats. For instance, Yates et al.              (PBBs), and chlordanes were found in
                                                et al. 2013, p. 12) and the economic                    (2014, pp. 48–49) quantified total                     the fat tissues of WNS-infected bats in
                                                importance of bats in controlling                       mercury (Hg) levels in 1,481 fur samples               New York, relative concentrations in
                                                agricultural or forest pest species                     and 681 blood samples from 10 bat                      bats from an uninfected population in
                                                (Boyles et al. 2011, pp. 41–42; Maine                   species captured across 8 northeastern                 Kentucky were also high (Kannan et al.
                                                and Boyles, 2015, p. 12442), we                         U.S. States and detected the highest Hg                2010, p. 615). The authors concluded
                                                anticipate that these new standards will                levels in tri-colored bats (Perimyotis                 that the study’s sample sizes were too
                                                be adopted by the wind-energy sector                    subflavus), little brown bats (Myotis                  small to accurately associate
                                                and ultimately required by wind-energy-                 lucifugus) and northern long-eared bats.               contaminant exposure with the effects
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                                                siting regulators at State and local                    More recently, Secord et al. (2015)                    of WNS in bats (Kannan et al. 2010, p.
                                                levels. We recommend that wind                          analyzed tissue samples from 48                        618), but argued that additional research
                                                facilities adopt these operating                        northeastern bat carcasses of four                     is needed. Despite the lack of
                                                protocols.                                              species, including northern long-eared                 knowledge on the effects of various
                                                   Our primary reason for not                           bats, and detected accumulations of                    contaminants on northern long-eared
                                                establishing regulatory criteria for wind-              several contaminants of emerging                       bats, we recognize the potential for
                                                energy facilities is that the best available            concern (CECs), including most                         direct and indirect consequences.


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                                                                  Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations                                           1907

                                                However, contaminant-related mortality                  appropriate decay stage for roosting                   dispersed, but limited, and should
                                                has not been reported for northern long-                bats. In addition to creating snags and                result in very minimal incidental take of
                                                eared bats. Additionally, Ingersoll                     live trees with roost features, prescribed             northern long-eared bats. We
                                                (2013, p. 9) suggested it was unclear                   fire may enhance the suitability of trees              recommend, however, that removal of
                                                what other threats or combination of                    as roosts by reducing adjacent forest                  hazardous trees be done during the
                                                threats other than WNS (e.g., changes to                clutter. Perry et al. (2007, p. 162) found             winter, wherever possible, when these
                                                critical roosting or foraging habitat,                  that five of six species, including                    trees will not be occupied by northern
                                                collisions, effects from chemicals) may                 northern long-eared bat, roosted                       long-eared bats. We conclude that the
                                                be responsible for recent bat declines.                 disproportionately in stands that were                 overall impact of removing hazardous
                                                                                                        thinned and burned 1 to 4 years prior                  trees is not expected to adversely affect
                                                Prescribed Fire
                                                                                                        but that still retained large overstory                conservation and recovery efforts for the
                                                   Prescribed fire is a useful forest-                  trees.                                                 species.
                                                management tool. However, there are                        The use of prescribed fire, where
                                                potential negative effects from                         warranted, will, in any given year,                    Activities Involving Tree Removal
                                                prescribed burning, including direct                    impact only a small proportion of the                     We issued the interim species-specific
                                                mortality to the northern long-eared bat.               northern long-eared bat’s range during                 rule under section 4(d) of the Act in
                                                Therefore, when using prescribed                        the bats active period. In addition, there             recognition that WNS is the primary
                                                burning as a management tool, fire                      are substantial benefits of prescribed fire            threat to the species’ continued
                                                frequency, timing, location, and                        for maintaining forest ecosystems. For                 existence. We further recognized that all
                                                intensity all need to be considered to                  example, the U.S. Forest Service’s                     other (non-WNS) threats cumulatively
                                                lower the risk of incidental take of bats.              Southern Region manages                                were not impacting the species at the
                                                Carter et al. (2002, pp. 140–141)                       approximately 10.9 million acres (4.4                  population level. Therefore, we apply
                                                suggested that the risk of direct injury                million hectares (ha)) of land, and the                the take prohibitions only to activities
                                                and mortality to southeastern forest-                   maximum estimate of acres where                        that we have determined may impact
                                                dwelling bats resulting from summer                     prescribed fire is employed annually                   the species in its most vulnerable life
                                                prescribed fire is generally low. During                during the active period of northern-                  stages, allowing for management
                                                warm temperatures, bats are able to                     long eared bats (April through October)                flexibility and a limited regulatory
                                                arouse from short-term torpor quickly.                  was 320,577 acres (129,732 ha), which                  burden.
                                                Northern long-eared bats use multiple                   is less than 3 percent of the National                    In this final 4(d) rule, we have
                                                roosts, switch roost trees often, and                   Forest regional lands. Similarly, the                  determined that the conservation of the
                                                could likely use alternative roosts in                  Forest Service’s Eastern Region manages                northern long-eared bat is best served by
                                                unburned areas, should fire destroy the                 15 Forests in 13 States that include                   limiting the prohibitions to the most
                                                current roost. Non-volant pups are                      about 12.2 million acres (4.88 million                 vulnerable life stages of the northern
                                                likely the most vulnerable to death and                 ha), of which 11.3 million acres (4.52                 long-eared bat (i.e., while in hibernacula
                                                injury from fire. Although most eastern                 million ha) are forested habitat. The                  or in maternity roost trees) within the
                                                bat species are able to carry their young               U.S. Forest Service anticipates applying               WNS zone and to activities, tree
                                                for some time after they are born (Davis                prescribed burning to 107,684 acres                    removal in particular, that are most
                                                1970, pp. 187–189), the degree to which                 (43,073 ha) or about 1percent of the                   likely to affect the species. We have also
                                                this behavior would allow females to                    forested habitat across the eastern region             revised some of the conservation
                                                relocate their young if fire threatens the              annually. In addition, only 17,342 acres               measures. To further simplify the
                                                nursery roost is unknown. The potential                 (6937 ha) (i.e., 0.15 percent of the                   regulation, we have established separate
                                                for death or injury resulting from                      forested habitat) of prescribed burning                prohibitions for activities involving tree
                                                prescribed burning depends largely on                   annually is anticipated to occur during                removal and those that do not involve
                                                site-specific circumstances, e.g., fire                 the non-volant period on the eastern                   tree removal. Within the WNS zone
                                                intensity near the maternity roost tree                 forests.                                               incidental take outside of hibernacula
                                                and the height above ground of pups in                     Further, there are substantial benefits             that results from tree removal is only
                                                the maternity roost tree. Not all fires                 of prescribed fire for maintaining forest              prohibited when it (1) Occurs within
                                                through maternity roosting areas will                   ecosystems, such as providing the                      0.25 miles (0.4 km) of known northern
                                                kill or injure all pups present.                        successional and disturbance processes                 long-eared bat hibernacula; or (2) cuts or
                                                   Bats are known to take advantage of                  that renew the supply of suitable roost                destroys known occupied maternity
                                                fire-killed snags and continue roosting                 trees (Silvis et. al. 2012, pp.6–7), as well           roost trees, or any other trees within a
                                                in burned areas. Boyles and Aubrey                      as helping to ensure a varied and                      150-foot (45-meter) radius from the
                                                (2006, pp. 111–112) found that, after                   reliable prey base (Dodd et. al. 2012, p.              known occupied maternity trees, during
                                                years of fire suppression, initial burning              269). There is no evidence that                        the pup season (June 1 through July 31).
                                                created abundant snags, which evening                   prescribed fire has led to population-
                                                bats (Nycticeius humeralis) used                                                                               Forest Management
                                                                                                        level declines in this species nor is there
                                                extensively for roosting. Johnson et al.                evidence that regulating the incidental                  Forest management maintains forest
                                                (2010, pp. 115) found that after burning,               take that might occur would                            habitat on the landscape, and the
                                                male Indiana bats roosted primarily in                  meaningfully change the conservation                   impacts from management activities are,
                                                fire-killed maples. In the Daniel Boone                 status or recovery potential of the                    for the most part, temporary in nature.
                                                National Forest, Lacki et al. (2009, p. 5)              species in the face of WNS.                            Forest management is the practical
                                                radio-tracked adult female northern                                                                            application of biological, physical,
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                                                long-eared bats before and after                        Hazardous Tree Removal Is Not                          quantitative, managerial, economic,
                                                prescribed fire, finding more roosts                    Prohibited                                             social, and policy principles to the
                                                (74.3 percent) in burned habitats than in                 Under this final 4(d) rule, incidental               regeneration, management, utilization,
                                                unburned habitats. Burning may create                   take that is caused by removal and                     and conservation of forests to meet
                                                more suitable snags for roosting through                management of hazardous trees is not                   specified goals and objectives (Society
                                                exfoliation of bark (Johnson et al. 2009a,              prohibited. The removal of these                       of American Foresters, http://dictionary
                                                p. 240), mimicking trees in the                         hazardous trees may be widely                          offorestry.org/dict/term/forest_


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                                                1908              Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations

                                                management). It includes a broad range                  developmental rates of young or permit                 long-eared bats preferred diameter-limit
                                                of silvicultural practices and this                     young bats a greater opportunity to                    harvests and forest roads. In Alberta,
                                                discussion specifically addresses tree-                 conduct successful initial flights (Perry              Canada, northern long-eared bats
                                                removal practices (e.g., timber harvest)                and Thill 2007, p. 224). Cryan et al.                  avoided the center of clearcuts and
                                                associated with forest management.                      (2001, p. 49) found several reproductive               foraged more in intact forest than
                                                Timber harvesting includes a wide                       and non-reproductive female northern                   expected (Patriquin and Barclay 2003, p.
                                                variety of practices from selected                      long-eared bat roost areas in recently                 654). On Prince Edward Island, Canada,
                                                removal of individual trees to                          harvested (less than 5 years) stands in                female northern long-eared bats
                                                clearcutting. Impacts to northern long-                 the Black Hills of South Dakota in                     preferred open areas less than forested
                                                eared bats from forest management                       which snags and small stems (diameter                  areas, with foraging areas centered along
                                                would be expected to range from                         at breast height (dbh)) of 2 to 6 inches               forest-covered creeks (Henderson and
                                                positive (e.g., maintaining or increasing               (5 to 15 centimeters) were the only trees              Broders 2008, pp. 956–958). In mature
                                                suitable roosting and foraging habitat                  left standing; however, the largest                    forests in South Carolina, 10 of the 11
                                                within northern long-eared bat home                     colony (n = 41) was found in a mature                  stands in which northern long-eared
                                                ranges) to neutral (e.g., minor amounts                 forest stand that had not been harvested               bats were detected were mature stands
                                                of forest removal, forest management in                 in more than 50 years.                                 (Loeb and O’Keefe 2006, p. 1215).
                                                areas outside northern long-eared bat                      Forest size and continuity are also                 Within those mature stands, northern
                                                summer home ranges, forest                              factors that define the quality of habitat             long-eared bats were more likely to be
                                                management away from hibernacula) to                    for roost sites for northern long-eared                recorded at points with sparse or
                                                negative (e.g., death of adult females or               bats. Lacki and Schwierjohann (2001, p.                medium vegetation rather than points
                                                pups or both resulting from the removal                 487) stated that silvicultural practices               with dense vegetation, suggesting that
                                                of maternity roost trees).                              could meet both male and female                        some natural gaps within mature forests
                                                   The best available data indicate that                roosting requirements by maintaining                   can provide good foraging habitat for
                                                the northern long-eared bat shows a                     large-diameter snags, while allowing for               northern long-eared bats (Loeb and
                                                varied degree of sensitivity to timber-                 regeneration of forests. Henderson et al.              O’Keefe 2006, pp. 1215–1217).
                                                harvesting practices. For example,                      (2008, p. 1825) also found that forest                 However, in southwestern North
                                                Menzel et al. (2002, p. 112) found                      fragmentation affects northern long-                   Carolina, Loeb and O’Keefe (2011, p.
                                                northern long-eared bats roosting in                    eared bats at different scales based on                175) found that northern long-eared bats
                                                intensively managed stands in West                      sex; females require a larger                          rarely used forest openings, but often
                                                Virginia, indicating that there were                    unfragmented area with a large number                  used roads. Forest trails and roads may
                                                sufficient suitable roosts (primarily                   of suitable roost trees to support a                   provide small gaps for foraging and
                                                snags) remaining for their use. At the                  colony, whereas males are able to use                  cover from predators (Loeb and O’Keefe
                                                same study site, Owen et al. (2002, p. 4)               smaller, more fragmented areas.                        2011, p. 175). In general, northern long-
                                                concluded that northern long-eared bats                 Henderson and Broders (2008, pp. 959–                  eared bats appear to prefer intact mixed-
                                                roosted in areas with abundant snags,                   960) examined how female northern                      type forests with small gaps (i.e., forest
                                                and that in intensively managed forests                 long-eared bats use the forest-                        trails, small roads, or forest-covered
                                                in the central Appalachians, roost                      agricultural landscape on Prince                       creeks) in forest with sparse or medium
                                                availability was not a limiting factor.                 Edward Island, Canada, and found that                  vegetation for forage and travel rather
                                                Northern long-eared bats often chose                    bats were limited in their mobility and                than fragmented habitat or areas that
                                                black locust and black cherry as roost                  activities are constrained when suitable               have been clearcut.
                                                trees, which were quite abundant and                    forest is limited. However, they also                     Impacts to northern long-eared bats
                                                often regenerate quickly after                          found that bats in a relatively                        from forest management would be
                                                disturbance (e.g., timber harvest).                     fragmented area used a building for                    expected to vary depending on the
                                                Similarly, Perry and Thill (2007, p. 222)               colony roosting, which suggests an                     timing of tree removal, location (within
                                                tracked northern long-eared bats in                     alternative for a colony to persist in an              or outside northern long-eared bat home
                                                central Arkansas and found roosts were                  area with fewer available roost trees.                 range), and extent of removal. While
                                                located in eight forest classes with 89                    In addition to impacts on roost sites,              bats can flee during tree removal,
                                                percent occurring in three classes of                   we considered effects of forest-                       removal of occupied roosts (during
                                                mixed pine-hardwood forest. The three                   management practices on foraging and                   spring through fall) may result in direct
                                                classes of mixed pine-hardwood forest                   traveling behaviors of northern long-                  injury or mortality to some percentage
                                                that supported the majority of the roosts               eared bats. In southeastern Missouri, the              of northern long-eared bats. This
                                                were partially harvested/thinned,                       northern long-eared bat showed a                       percentage would be expected to be
                                                unharvested (50 to 99 years old), and                   preference for contiguous tracts of forest             greater if flightless pups or
                                                group-selection harvested (Perry and                    cover (rather than fragmented or wide                  inexperienced flying juveniles were also
                                                Thill 2007, pp. 223–224).                               open landscapes) for foraging or                       present. Forest management outside of
                                                   Certain levels of timber harvest may                 traveling, and different forest types                  northern long-eared bat summer home
                                                result in canopy openings, which could                  interspersed on the landscape increased                ranges or away from hibernacula would
                                                result in more rapid development of                     likelihood of occupancy (Yates and                     not be expected to affect the
                                                young bats. In central Arkansas, Perry                  Muzika 2006, p. 1245). Similarly, in                   conservation of the species.
                                                and Thill (2007, pp. 223–224) found                     West Virginia, female northern long-                      Forest management is not usually
                                                female bat roosts were more often                       eared bats spent most of their time                    expected to result in a permanent loss
                                                located in areas with partial harvesting                foraging or travelling in intact forest,               of suitable roosting or foraging habitat
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                                                than males, with more male roosts (42                   diameter-limit harvests (70 to 90 year-                for northern long-eared bats. On the
                                                percent) in unharvested stands than                     old stands with 30 to 40 percent of basal              contrary, forest management is expected
                                                female roosts (24 percent). They                        area removed in the past 10 years), and                to maintain a forest over the long term
                                                postulated that females roosted in                      road corridors, with no use of deferment               for the species. However, localized
                                                relatively more open forest conditions                  harvests (similar to clearcutting) (Owen               temporary reductions in suitable
                                                because they may receive greater solar                  et al. 2003, p. 355). When comparing                   roosting and/or foraging habitat can
                                                radiation, which may increase                           use and availability of habitats, northern             occur from various forest practices (e.g.,


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                                                                  Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations                                           1909

                                                clearcuts). As stated above, northern                      Many of the comments on the                         northern long-eared bats observed at
                                                long-eared bats have been found in                      proposed and interim 4(d) rules noted                  least once, will continue to be
                                                forests that have been managed to                       that habitat is not limiting for the                   considered ‘‘known hibernacula’’ as
                                                varying degrees, and as long as there is                northern long-eared bat. As we                         long as the hibernacula remains suitable
                                                sufficient suitable roosting and foraging               documented in the final listing                        for the northern long-eared bat. A
                                                habitat within their home range and                     determination (80 FR 1802; April 2,                    hibernaculum remains suitable for
                                                travel corridors between those areas, we                2015), the extent of conversion from                   northern long-eared bats even when Pd
                                                would expect northern long-eared bat                    forest to other land cover types has been              or WNS has been detected.
                                                colonies to continue to occur in                        fairly consistent with conversion to                      We have adopted the 0.25-mile (0.4-
                                                managed landscapes. However, in areas                   forest (cropland reversion/plantings).                 km) buffer around known northern long-
                                                with WNS, northern long-eared bats                      Further, the recent past and projected                 eared bat hibernacula for several
                                                may be less resilient to stressors and                  amounts of forest loss to conversion                   reasons: (1) It will help to protect micro-
                                                maternity colonies are smaller. Given                   was, and is anticipated to be, only a                  climate characteristics of the
                                                the low inherent reproductive potential                 small percentage of the total amount of                hibernacula; (2) for many known
                                                of northern long-eared bats (one pup per                forest habitat. For example by 2060, 4 to              hibernacula, bats use multiple entrances
                                                female per year), death of adult females                8 percent of the forested area found in                that may not be reflected in the primary
                                                or pups or both during tree felling could               2007 across the conterminous United                    location information (e.g., bats may use
                                                reduce the long-term viability of some of               States is expected to be lost (U.S Forest              other smaller entrances that are often
                                                the WNS-impacted colonies if they are                   Service 2012, p. 12). The northern long-               spread out from the main entrance
                                                also in the relatively small percentage of              eared bat has been documented to use                   accessed for surveys or other purposes)
                                                forest habitat directly affected by forest              a wide variety of forest types across its              and the hibernacula may have extensive
                                                management.                                             wide range. Therefore, we agree that the               underground features that extend out
                                                   As we documented in the interim 4(d)                 availability of forested habitat does not              from known entrances; (3) in the late
                                                rule, forestry management and                           now, nor will it likely in the future,                 summer and fall when bat behavior
                                                silviculture are vital to the long-term                 limit the conservation of the northern                 begins to center on hibernacula
                                                survival and recovery of the species.                   long-eared bat.                                        (swarming), it appears that northern
                                                Based on information obtained during                       We have determined that when the                    long-eared bats may roost in a widely
                                                comment periods, approximately 2                        prohibitions for the northern long-eared               dispersed area, which may reduce the
                                                percent of forests in States within the                 bat included in this final 4(d) rule are               potential that any activity outside of this
                                                range of the northern long-eared bat are                applied to forest-conversion activities,               buffer would significantly affect the
                                                impacted by forest management                           the potential for negative additive                    species; (4) outside of the maternity
                                                activities annually (Boggess et al., 2014,              impacts to individuals or colonies is                  period, northern long-eared bats have
                                                p.9). Of this amount, in any given year,                significantly reduced. As WNS impacts                  demonstrated the ability to adapt to
                                                a smaller fraction of forested habitat                  bat populations, unoccupied, suitable                  forest-management-related and other
                                                would be impacted during the active                     forage and roosting habitat will be                    types of disturbances; and (5) regardless
                                                season when female bats and pups are                    increasingly available for remaining                   of the buffer size, bats will remain fully
                                                most vulnerable. Therefore, we have                     bats.                                                  protected from take while in the
                                                determined that when the prohibitions                                                                          hibernacula, when they are most
                                                                                                        Tree-Removal Conservation Measures
                                                for the northern long-eared bat included                                                                       vulnerable.
                                                in this final 4(d) rule are applied to                     Under this final 4(d) rule, incidental                 The microclimate, temperature,
                                                forest management activities, the                       take within the WNS zone involving                     humidity, and air and water flow within
                                                potential impacts will be significantly                 tree removal is not prohibited if two                  a hibernaculum are all important
                                                reduced.                                                conservation measures are followed.                    variables that could potentially be
                                                                                                        The first measure is the application of                impacted by forest management or other
                                                Forest Conversion                                       a 0.25 mile (0.4 km) buffer around                     activities when conducted in proximity
                                                   In our listing determination for the                 known occupied northern long-eared                     to a hibernaculum. A 0.25-mile (0.4-km)
                                                northern long-eared bat, we noted that                  bat hibernacula. The second                            buffer will protect the hibernaculum’s
                                                current and future forest conversion                    conservation measure is that the activity              microclimate. Studies that have
                                                may have negative additive impacts                      does not cut or destroy known occupied                 evaluated the depth of edge influence
                                                where the species has been impacted by                  maternity roost trees, or any other trees              from forest edge or tree removal on
                                                WNS (80 FR 17991; April 2, 2015). Our                   within a 150-foot (45-m) radius around                 temperature, humidity, wind speed, and
                                                assessment was based largely on the                     the maternity roost tree, during the pup               light penetration suggest that although
                                                species’ summer-home-range fidelity                     season (June 1 through July 31). The                   highly variable among forest types and
                                                and the potential for increased energetic               rationale for these measures is discussed              other site-specific factors (such as aspect
                                                demands for individuals where the loss                  below.                                                 and season), the depth of edge influence
                                                of summer habitat had been removed or                                                                          can range from 164 feet (50 m) (Matlack
                                                degraded (e.g., fragmentation). We noted                Conservation Measure 1: Tree Removal                   1993, p. 193) to over 1,312 feet (400 m)
                                                that forest conversion ‘‘can result in a                Near Known Northern Long-eared Bat                     (Chen et al. 1995, p. 83). However, the
                                                myriad of effects to the species,                       Hibernacula                                            hibernacula often selected by northern
                                                including direct loss of habitat,                         ‘‘Known hibernacula’’ are defined as                 long-eared bats are ‘‘large, with large
                                                fragmentation of remaining habitat, and                 locations where one or more northern                   passages’’ (Raesly and Gates 1987, p.
                                                direct injury or mortality’’ (80 FR 17993;              long-eared bats have been detected                     20), and may be less affected by
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                                                April 2, 2015). In the interim 4(d) rule                during hibernation or at the entrance                  relatively minor surficial micro-climatic
                                                we exempted most forest-management                      during fall swarming or spring                         changes that might result from the
                                                activities except for the conversion of                 emergence. Given the documented                        limited exempted activities outside of
                                                mature hardwood or mixed forest into                    challenges of surveying for northern                   the 0.25-mile (0.4-km) buffer. Further,
                                                intensively managed monoculture-pine                    long-eared bats in the winter (use of                  bats rarely hibernate near the entrances
                                                plantation stands, or non-forested                      cracks, crevices that are inaccessible to              of structures (Grieneisen 2011, p. 10), as
                                                landscape (80 FR 18025; April 2, 2015).                 surveyors), any hibernacula with                       these areas can be subject to greater


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                                                1910              Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations

                                                predation (Grieneisen 2011, p. 10;                      managed in any given year and over                     suitability of the habitat for foraging by
                                                Kokurewicz 2004, p. 131) and daily                      1,500 hibernacula documented as used                   northern long-eared bats or perhaps
                                                temperature fluctuations (Grieneisen                    by the species). Similarly, forest                     even improves prey availability. In such
                                                2011, p. 10). Davis et al. (1999, p. 311)               conversion is anticipated to be relatively             a case, the timber harvest, although
                                                reported that partial clearcutting                      small compared to available habitat;                   closer than 0.25 miles (0.4 km) to the
                                                ‘‘appears not to affect winter                          therefore, based on our current                        hibernaculum, is not likely to result in
                                                temperatures deep in caves.’’ Caviness                  understanding of potential swarming-                   incidental take so we would not
                                                (2003, p. 130) reported that prescribed                 habitat, on the scale of 50,000 acres (20,             recommend that the harvester seek
                                                burns were found to have no notable                     342ha) per hibernaculum, the relatively                authorization for incidental take
                                                influence on bats hibernating in various                small foot-print of activities not                     pursuant to the Act. For activities
                                                caves in the Ozark National Forest. All                 prohibited by this final rule are unlikely             planned within 0.25 miles (0.4 km) of
                                                bats present in caves at the beginning of               to affect the conservation or recovery                 hibernaculum, we encourage you to
                                                the burn were still present and in ‘‘full               potential of the species. Raesly and                   contact the local Ecological Services
                                                hibernation’’ when the burn was                         Gates (1987, p. 24) evaluated external                 Field Office (http://www.fws.gov/offices)
                                                completed, and bat numbers increased                    habitat characteristics of hibernacula                 to help evaluate the potential for take of
                                                in the caves several days after the burn.               and reported that for the northern long-               northern long-eared bats.
                                                There were minute changes in relative                   eared bat the percentage of cultivated
                                                                                                                                                               Conservation Measure 2: Tree Removal
                                                humidity and temperature during the                     fields within 0.6 miles (1 km) of the
                                                                                                                                                               Near Known Maternity Roost Trees
                                                burn, and elevated short-term levels of                 hibernacula was greater (52.6 percent)
                                                some contaminants from smoke were                       for those caves used by the species, than                Female northern long-eared bats roost
                                                noted.                                                  for those caves not used by the species                communally in trees in the summer
                                                   Northern long-eared bat hibernacula                  (37.7 percent), suggesting that the                    (Foster and Kurta 1999, p. 667) and
                                                can be large and complex and, spatially,                removal of some forest around a                        exhibit fission-fusion behavior
                                                may not be fully represented in                         hibernacula can be consistent with the                 (Garroway and Broders 2007, p. 961),
                                                locational information contained in                     species needs.                                         where members frequently roost
                                                species records by State or Federal                        Outside of the maternity period,                    together (fusion), but the composition
                                                agencies or by natural heritage                         northern long-eared bats have                          and size of the groups is not static, with
                                                programs. A 0.25-mile (0.4-km) buffer                   demonstrated the ability to respond                    individuals frequently departing to be
                                                will help protect the spatial extent of                 successfully to forest-management-                     solitary or to form smaller or different
                                                many known hibernacula. For example,                    related and other types of disturbances.               groups (fission) (Barclay and Kurta
                                                one limestone mine in Ohio used by                      Therefore, the limited disturbance                     2007, p. 44). As part of this behavior,
                                                northern long-eared bats had                            associated with incidental-take                        northern long-eared bats switch tree
                                                approximately 44 miles (71 km) of                       exceptions outside of the 0.25-mile (0.4-              roosts often (Sasse and Pekins 1996, p.
                                                passages and multiple entrances (Brack                  km) buffer on hibernacula is consistent                95), typically every 2 to 3 days (Foster
                                                2007, p. 740). In northern Michigan,                    with the conservation of the species. For              and Kurta 1999, p. 665; Owen et al.
                                                bats (including northern long-eared                     example, Silvis et al.’s (2015, p.1)                   2002, p. 2; Carter and Feldhamer 2005,
                                                bats) occupied mines that were more                     experimental removal of roosts                         p. 261; Timpone et al. 2010, p. 119). In
                                                structurally complex and longer (1,007                  suggested that the ‘‘loss of a primary                 Missouri, the longest time spent
                                                ft ± 2,837 ft (307m ± 865 m) than mines                 roost or 20 percent of secondary roosts                roosting in one tree was 3 nights
                                                that were unoccupied, and the occupied                  in the dormant season may not cause                    (Timpone et al. 2010, p. 118). Bats
                                                mines had a total length of passages that               northern long-eared bats to abandon                    switch roosts for a variety of reasons,
                                                ranged from 33 feet to 4 miles (10                      roosting areas or substantially alter                  including temperature, precipitation,
                                                meters to 6.4 kilometers) (Kurta and                    some roosting behaviors in the                         predation, parasitism, sociality, and
                                                Smith 2014, p. 592).                                    following active season when tree-roosts               ephemeral roost sites (Carter and
                                                   Only a relatively small proportion of                are used.’’                                            Feldhamer 2005, p. 264).
                                                the areas where swarming northern                          Prior to WNS, the most significant                    Maternity colonies, consisting of
                                                long-eared bats may occur are likely to                 risk identified for northern long-eared                females and young, are generally small,
                                                be affected by tree-removal activity.                   bat conservation was direct human                      numbering from about 30 (Whitaker and
                                                There are over 1,500 known hibernacula                  disturbance while bats are hibernating                 Mumford 2009, p. 212) to 60 individuals
                                                for the species in the United States                    (e.g., Olson et al. 2011, p. 228; Bilecki              (Caceres and Barclay 2000, p. 3);
                                                (Service 2015, unpublished data),                       2003, p. 55; Service 2012, unpublished                 however, one group of 100 adult females
                                                several known in Canada, and                            data). This final 4(d) rule (within the                was observed in Vermilion County,
                                                potentially many others yet to be                       WNS zone) addresses these impacts.                     Indiana (Whitaker and Mumford 2009,
                                                identified. Lowe (2012, p. 58) reported                    We have prohibited incidental take of               p. 212) and Lereculeur (2013, p. 25)
                                                that the roosts of northern long-eared                  northern long-eared bats under specific                documented a colony of at least 116
                                                bats were evenly distributed over                       tree-removal circumstances; however,                   northern long-eared bats. In West
                                                distances within 4.6 miles (7.3 km) from                that does not mean that all activities                 Virginia, maternity colonies in two
                                                a swarming site. If the northern long-                  involving tree-removal activities within               studies had a range of 7 to 88
                                                eared bat’s potential swarming habitat                  the 0.25-mile (0.4-k) buffer of                        individuals (Owen et al. 2002, p. 2) and
                                                (including foraging habitat during that                 hibernacula will result in take. For                   11 to 65 individuals, with a mean size
                                                period) can be approximated as the                      example, a timber harvest might be                     of 31 (Menzel et al. 2002, p. 110). Lacki
                                                forest habitat within 5 miles (8.1 km) of               conducted within 0.25 miles (0.4 km) of                and Schwierjohann (2001, p. 485) found
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                                                hibernacula, that equates to a 50,265                   a hibernaculum at a time when bats are                 that the number of bats within a given
                                                acre (20,342 ha) area per hibernaculum.                 unlikely to be roosting in trees within                roost declined as the summer
                                                In any given year, only a small                         the buffer (e.g., winter), which fully                 progressed. Pregnant females formed the
                                                proportion of the forest habitat within                 protects any bats in the hibernaculum as               largest aggregations (mean=26) and post-
                                                the potential swarming habitat is likely                well as the hibernaculum’s suitability                 lactating females formed the smallest
                                                to be impacted by tree-removal activities               for bats (i.e., access, microclimate), and             aggregation (mean=4). Their largest
                                                (e.g., generally 2 percent of forests are               does not significantly change the                      overall reported colony size was 65 bats.


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                                                                  Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations                                           1911

                                                   Northern long-eared bats change roost                bats released in the open during the day               documented that a 39-foot (12-meter)
                                                trees frequently, but use roost areas                   demonstrated a successful rapid ‘‘flight-              buffer around a maternity roost tree
                                                repeatedly and to a lesser extent, reuse                to-cover’’ response.                                   during a harvest in May allowed the
                                                specific roosts (e.g., Cryan et al. 2001, p.               Adult females give birth to a single                roost to be successfully used through
                                                50; Foster and Kurta 1999, p. 665). The                 pup (Barbour and Davis 1969, p. 104).                  late July and that one buffered tree was
                                                northern long-eared bat appears to be                   Birthing within the colony tends to be                 used 2 years in a row. We have adopted
                                                somewhat flexible in tree-roost                         synchronous, with the majority of births               a standard for exception of take that is
                                                selection, selecting varying roost tree                 occurring around the same time                         almost four times that which proved
                                                species and types of roosts throughout                  (Krochmal and Sparks 2007, p. 654).                    effective in this example, in order to
                                                its range. Females tend to roost in more                Parturition (birth) likely occurs in late              better account for the variation in forest
                                                open areas than males, likely due to the                May or early June (Caire et al. 1979, p.               types used by the northern long-eared
                                                increased solar radiation, which aids                   406; Easterla 1968, p. 770; Whitaker and               bat and a variety of slopes that might
                                                pup development (Perry and Thill 2007,                  Mumford 2009, p. 213), but may occur                   influence how large a buffer may need
                                                p. 224). Fewer trees surrounding                        as late as July (Whitaker and Mumford                  to be in order to prove effective. Roost
                                                maternity roosts may also benefit                       2009, p. 213). Upon birth, the pups are                trees used by northern long-eared bats
                                                juvenile bats that are starting to learn to             unable to fly, and females return to                   are often in fairly close proximity to
                                                fly (Perry and Thill 2007, p. 224).                     nurse the pups between foraging bouts                  each other within the species’ summer
                                                Female roost-site selection, in terms of                at night. In other Myotis species, mother              home range. For female northern long-
                                                canopy cover and tree height, changes                   bats have been documented carrying                     eared bats, the mean distance between
                                                depending on reproductive stage;                        flightless young to a new roosting                     roosts was reported as 63m to 600m
                                                relative to pre- and post-lactation                     location (Humphrey et al. 1977, p. 341).               from a variety of studies published 1996
                                                periods, lactating northern long-eared                  The ability of a mother to move young                  through 2014 (Foster and Kurta 1999 p.
                                                bats have been shown to roost higher in                 may be limited by the size of the                      665; Cryan et al. 2001, p. 46; Swier
                                                tall trees situated in areas of relatively              growing pup. Juvenile volancy (flight)                 2003, pp. 58–59; Jackson 2004, p. 89;
                                                less canopy cover and lower tree density                often occurs by 21 days after birth                    Henderson and Broders 2008, p. 958;
                                                (Garroway and Broders 2008, p. 91).                     (Krochmal and Sparks 2007, p. 651;                     Johnson et al. 2009, p. 240; Badin 2014,
                                                                                                        Kunz 1971, p. 480) and has been                        p. 76; Bohrman and Fecske,
                                                   The northern long-eared bat’s
                                                                                                        documented as early as 18 days after                   unpublished data). Further, within that
                                                tendency for frequent roost switching                   birth (Krochmal and Sparks 2007, p.
                                                may help them avoid or respond                                                                                 data, the distance between roosts was
                                                                                                        651). Prior to gaining the ability to fly,             reported as small as 5 meters in one
                                                effectively to disturbance by people                    juvenile bats are particularly vulnerable
                                                outside of the maternity season. The                                                                           study (Badin 2014, p. 76) and 36 meters
                                                                                                        to tree-removal activities. Based on this              in another (Jackson 2004, p. 89). As
                                                frequent-roost-switching behavior of                    information, we have determined that
                                                northern long-eared bat suggests that                                                                          Sasse 1995, p. 23, noted ‘‘some roost
                                                                                                        the most sensitive period to protect                   sites appeared to be ’clustered’
                                                they are adapted to responding quickly                  pups at maternity roost trees is from
                                                to changes in roost availably (ephemeral                                                                       together.’’ Therefore, even this modest
                                                                                                        June 1 through July 31 (the ‘‘pup                      additional buffer may also protect other
                                                roosts), changing environmental                         season’’).
                                                conditions (temperature), prey                                                                                 roosts trees used by female northern
                                                                                                           Known occupied maternity roost trees
                                                availability, or physiological needs                                                                           long-eared bats during the maternity
                                                                                                        are defined as trees that have had female
                                                (torpor, reproduction). In a study of                                                                          period that have not yet been
                                                                                                        northern long-eared bats or juvenile bats
                                                radio-tracked northern long-eared bats                                                                         documented. In addition, because
                                                                                                        tracked to them or the presence of
                                                responding to the disturbance from                                                                             colonies occupy more than one
                                                                                                        female or juvenile bats is known as a
                                                prescribed fire (Dickinson et al. 2009,                 result of other methods. Once                          maternity roost in a forest stand and
                                                pp. 55–57), the bats appeared ‘‘to limit                documented, northern-long eared bats                   individual bats frequently change
                                                their exposure to conditions created by                 are known to continue to use the same                  roosts, in some cases a portion of a
                                                fire. At no point did they fly outside of               roosting areas. Therefore, a tree will be              colony or social network is likely to be
                                                their typical home range area, nor did                  considered to be a ‘‘known, occupied                   protected by multiple 150-foot buffers
                                                they travel far from the burn itself.’’                 maternity roost’’ as long as the tree and              during the maternity season.
                                                While some of the bats soon returned to                 surrounding habitat remain suitable for                   Currently, since most States and
                                                areas recently burned, by day 6 and 7                   northern long-eared bats. The incidental               natural heritage programs do not track
                                                post burn, they ‘‘appeared to return to                 take prohibition for known, occupied                   roosts and many have not tracked any
                                                pre-burn norms in terms of emergence                    maternity roosts trees applies only                    northern long-eared bat occurrences, we
                                                time, length of foraging bouts, and use                 during the during the pup season (June                 recognize that not all northern long-
                                                of the burn unit and adjacent habitats.’’               1 through July 31).                                    eared bat maternity roost sites are
                                                Carter et al. (2000, pp 139–140), noted                    In addition to protecting the known                 known. Therefore, this measure will not
                                                that ‘‘During the summer months, bats                   roosts, we have also included in this                  protect an unknown maternity roosts
                                                are able to arouse quickly as the                       conservation measure avoiding the                      unless it falls under one of the buffers
                                                difference between the ambient                          cutting or destroying of any other trees               related to protecting a known roost or
                                                temperature and active body                             within a 150-foot (45-meter) radius from               hibernaculum.
                                                temperature of bats is less. Most bat                   the known, occupied maternity roost                       Although not fully protective of every
                                                species utilizing trees and snags have                  tree during the pup season (June 1                     individual, the conservation measures
                                                multiple roosts throughout the forest                   through July 31). Leaving a buffer of                  identified in this final rule help protect
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                                                (Sasse and Pekins 1996; Callahan et al.                 other trees around the maternity roost                 maternity colonies. This final species-
                                                1997; Menzel et al. 1998; Foster and                    tree will help to protect the roost tree               specific rule under section 4(d) of the
                                                Kurta 1999, Menzel et al. 2001),                        from damage or destruction that may be                 Act provides the regulatory flexibility
                                                providing alternate roosts should the                   caused by other nearby trees being                     for certain activities to occur that have
                                                current roost be destroyed by fire.’’                   removed as well as helping protect the                 not been the cause of the species’
                                                Sparks et al. (2008, pp. 207–208)                       roost tree from wind throw and micro-                  imperilment, while allowing us to focus
                                                documented that northern long-eared                     climate changes. O’Keefe (2009 p. 42)                  conservation efforts on WNS, promoting


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                                                1912              Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations

                                                conservation of the species across its                  eared bats), including while in the                    accommodate a more site-specific
                                                range.                                                  hibernacula where they are most                        approach, based on proximity to
                                                                                                        vulnerable. We have retained the 0.25-                 hibernacula, for example.
                                                Additional Prohibitions and Exceptions                                                                            Our Response: We reevaluated the
                                                                                                        mile buffer (0.25-mile radius around
                                                  In this final 4(d) rule we carry forward              known hibernacula entrance/access                      approach to the WNS zone in this final
                                                other standard prohibitions and                         points used by bats) to further protect                rule and determined that the 150-mile
                                                exceptions that are typically applied to                the hibernaculum and associated                        buffer used for the interim 4(d) rule
                                                threatened species and are currently                    forested habitat for several reasons (see              appears to be very effective in capturing
                                                applicable under the interim rule for the               discussion above under Conservation                    counties where new Pd detections are
                                                northern long-eared bat. These                          Measure 1: Tree Removal Near Known                     reported, in particular when looking at
                                                prohibitions included the possession of                 Northern Long-eared Bat Hibernacula).                  the new occurrences over the last 5
                                                and other acts with unlawfully taken                    Some of the peer-reviewers                             years. For more details of this analysis,
                                                northern long-eared bats, as well as                    recommended that within the                            please see our discussion in the WNS
                                                import and export. We also included                     hibernacula buffer that certain limited                Zone section of this rule.
                                                standard exemptions, including all the                  activities should be allowed (e.g., timber                4. Comment: Peer reviewer(s)
                                                permitting provisions of 50 CFR 17.32                   harvest that only removes a small                      commented that the Service’s
                                                and the exemption for employees or                      percentate of the forest habitat when                  definitions relative to forestry practices
                                                agents of the Service, of the National                  bats are not active). As discussed above               should be more precise and should use
                                                Marine Fisheries Service, or of a State                 under Conservation Measure 1: Tree                     silviculture terminology.
                                                conservation agency when acting in the                  Removal Near Known Northern Long-                         Our Response: We have revised the
                                                course of their official duties to take                 eared Bat Hibernacula, not all tree-                   prohibitions to no longer use specific
                                                northern long-eared bats covered by an                  removal activities within the buffer of                forestry practices or silviculture
                                                approved cooperative agreement to                       hibernacula will result in take. For                   terminology. Take of the northern long-
                                                carry out conservation programs.                        example, a timber harvest might be                     eared bat within the context of forest
                                                                                                        conducted within the buffer when bats                  management is not prohibited provided
                                                Summary of Comments and                                                                                        that conservation measures to protect
                                                Recommendations on the Proposed and                     are unlikely to be roosting in trees (e.g.,
                                                                                                        winter) that fully protects any bats in                hibernacula and known maternity roost
                                                Interim 4(d) Rules                                                                                             trees are implemented as described in
                                                                                                        the hibernaculum as well as the
                                                   The northern long-eared bat was                      hibernaculum’s suitability for bats (i.e.,             this rule.
                                                listed as a threatened species under the                access, microclimate), and does not                       5. Comment: Peer reviewer(s)
                                                Act, with an interim rule under section                 significantly change the suitability of                recommended that the seasonal
                                                4(d) of the Act, on April 2, 2015 (80 FR                the habitat for foraging by northern                   restrictions for the northern long-eared
                                                17974). At that time, the Service invited               long-eared bats or perhaps even                        bat ‘‘pup season’’ be expanded and/or
                                                public comments on the interim 4(d)                     improves prey availability. In such a                  based on climate and geography within
                                                rule for 90 days, ending July 1, 2015.                  case, the timber harvest, although                     the species’ range.
                                                The Service had already received                        within the buffer, is not likely to result                Our Response: We recognize that in
                                                comments for 60 days on its proposed                    in incidental take so we would not                     some areas or in some years the period
                                                4(d) rule (80 FR 2371, January 16, 2015).               recommend that the harvester seek                      when young northern long-eared bats
                                                In total, the Service received                          authorization for incidental take                      are non-volant may be earlier or later
                                                approximately 40,500 comments on the                    pursuant to the Act. Because the buffer                than the June and July timeframe. The
                                                proposed and interim 4(d) rules. We                     only applies to actions that result in                 timing of when northern long-eared bats
                                                discuss them below.                                     incidental take of the northern long-                  give birth is likely a complex interplay
                                                                                                        eared bat, we determined that there was                of a variety of factors affecting fetal
                                                Peer Reviewer Comments                                                                                         development (e.g., condition of the
                                                                                                        no need to attempt to exempt activities
                                                  1. Comment: Peer reviewer(s)                          (e.g., a limited timber harvest) where                 mother, temperature, prey availability),
                                                commented that the 0.25-mile (radius)                   incidental take is unlikely.                           and similar factors may also influence
                                                around hibernacula is an inadequate                        2. Comment: Peer reviewer(s)                        the time required for young to develop
                                                buffer. There were additional                           commented that the WNS buffer zone                     the ability to fly. In addition, a study in
                                                suggestions for alternative buffer                      should be removed and protections                      West Virginia documented that the peak
                                                distances as well as more detail on how                 should occur throughout the range of                   pregnancy and lactation dates shifted
                                                activities might be limited within those                the species.                                           post WNS (Francl et al. 2012, p. 36).
                                                buffers. A specific suggestion of a 1.6-                   Our Response: We have established                   However, looking across a variety of
                                                mile buffer was made, with a statement                  prohibitions on the purposeful take of                 studies, the June and July timeframe
                                                that most forest practices could occur                  northern long eared bats throughout the                appears to generally capture what is
                                                within the buffer provided that the trees               species range. However, because WNS is                 typically reported as the non-volant
                                                were not completely removed                             the most significant threat known to be                period for northern long-eared bats
                                                (conversion). In addition, a suggestion                 imperiling the species, we have                        across much of their range within the
                                                of 0.5-mile buffer was made.                            determined that in areas where WNS                     United States. We have determined that
                                                   Our Response: We have revised the                    has not been detected, additional                      a single timeframe for implementing the
                                                approach used in this final 4(d) rule to                prohibitions are not warranted. We                     prohibition on maternity roost tree
                                                ensure that hibernating northern long-                  recognize that the WNS zone will                       removal provides clarity for the
                                                eared bats in the WNS zone are                          change over time. We remain committed                  regulated public. In addition, while it
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                                                protected from incidental take                          to regularly updating the WNS zone                     does not modify the incidental take
                                                independent of the buffer size used in                  map as new information about the                       prohibition established in these
                                                the conservation measure. In addition,                  spread of the Pd fungus becomes                        regulations, our local field offices may
                                                all northern long-eared bats both in and                known.                                                 be able to provide more refined local
                                                outside of the WNS zone are protected                      3. Comment: Peer reviewer(s)                        estimates of the non-volant period for
                                                from purposeful take (e.g., killing or                  commented that the WNS buffer zone                     specific areas. Project planners may
                                                intentionally harassing northern long-                  should be expanded and/or changed to                   choose to use these local estimates for


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                                                                  Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations                                           1913

                                                planning purposes where they are                          7. Comment: Peer reviewer(s)                         suite of exempted activities under the
                                                available.                                              recommended that pregnant females                      4(d) rule (specific sectors addressed
                                                   6. Comment: Peer reviewer(s)                         should be protected as part of the                     below).
                                                recommended year-round protections                      seasonal restriction criteria.                           Our Response: In general, this final
                                                for maternity roost trees or conversely                   Our Response: We recognize that                      rule has been restructured to clarify
                                                that we remove entirely the protections                 pregnant females may be in torpor or                   prohibitions to take rather than to rely
                                                for maternity trees because it is                       less able to flee in early spring.                     on a list of excepted activities.
                                                ineffective and serves as a disincentive                However, we did not have information                   Prohibitions are applied in this final
                                                for conducting surveys.                                 on how pregnancy in northern long-                     rule where necessary and advisable for
                                                   Our Response: Although northern                      eared bats influenced the degree of                    the conservation of the species.
                                                long-eared bats have been documented                    torpor or their ability to flee from                   Therefore, the various ‘‘sectors’’ do not
                                                to use some roost trees over multiple                   disturbance. As discussed in this rule,                need to be identified or ‘‘excepted’’ to
                                                years, in many cases it is because the                  we expect only a small percentage of the               apply rule provisions.
                                                tree is dead or dying or has structural                 species’ forested habitat to be affected               Forest Management
                                                defects that provides the roosting                      by activities (e.g., tree removal,
                                                                                                        prescribed fire) that might impact a                      11. Comment: Several commenters
                                                features attractive to the species.                                                                            recommended that forest conversion be
                                                Further, maternity roost trees are used                 pregnant northern long-eared bats in
                                                                                                        torpor and, therefore, we expect only                  included as an excepted activity.
                                                only briefly (e.g., northern long-eared                                                                        Comments were specific to conversion
                                                bats typically change roosts every few                  small proportion of the species’
                                                                                                        population to be potentially exposed to                of hardwood forests to pine plantations,
                                                days, and only a relatively small                                                                              managed pine forest, pine ecosystem,
                                                percentage of those are used more than                  these activities. Because of the relatively
                                                                                                        small exposure and uncertainty about                   and the Service’s characterization of
                                                once in any one season). Given that                                                                            pine stands as monoculture stands
                                                maternity roosts trees are ephemeral on                 how pregnancy affects degree of torpor
                                                                                                        or ability to flee, we have not expanded               representing poor bat habitat.
                                                the landscape and used for very short                                                                             Our Response: Incidental take
                                                periods of time in the active season, we                the seasonal protections for this
                                                                                                        purpose. We believe that seasonal                      resulting from forest management,
                                                determined that year-round protections                                                                         including forest conversion, is not a
                                                for known, occupied maternity roost                     restrictions help protect the vulnerable
                                                                                                        pup stage, when young pups cannot fly,                 prohibited action pursuant to this final
                                                trees are not warranted. We considered                                                                         4(d) rule provided conservation
                                                removing the protections for known,                     and are adequate for the purposes of this
                                                                                                        rule.                                                  measures to protect known hibernacula
                                                occupied maternity roosts as                                                                                   and known, occupied maternity roost
                                                recommended by another peer reviewer,                     8. Comment: Peer reviewer(s) stated
                                                                                                        that the conservation efforts will not be              trees are employed. Please see sections
                                                but instead modify the protection so as                                                                        above titled Forest Management and
                                                to minimize the disincentive for                        effective because the natural heritage
                                                                                                        data are limited with respect to known                 Forest Conversion.
                                                conducting surveys. In developing this                                                                            12. Comment: Commenters stated that
                                                final rule, we kept protections for                     maternity roost trees and hibernacula.
                                                                                                                                                               forest management must occur to avoid
                                                known, occupied maternity roosts for                       Our Response: We agree that the data
                                                                                                                                                               habitat deterioration to poor quality bat
                                                two reasons: (1) While it may be                        are limited and this can be challenging
                                                                                                                                                               habitat. They further stated that forest
                                                unlikely, in cases where a tree was                     from the implementation and/or project
                                                                                                                                                               health depends upon active
                                                about to be removed, but was known to                   planning perspective. However, we have
                                                                                                                                                               management including tree removal and
                                                be occupied by northern long-eared                      purposefully limited protections where
                                                                                                                                                               clearcutting.
                                                bats, they would have some protections                  possible, to minimize the potential
                                                                                                                                                                  Our Response: We agree that forest
                                                while the young could not fly; and (2)                  disincentive to continue to survey for
                                                                                                                                                               management can be very important in
                                                we wanted known, occupied maternity                     the species. However, we anticipate that
                                                                                                                                                               creating or maintaining forest
                                                roosts to be given consideration because                information in State natural heritage
                                                                                                                                                               successional patterns that help to ensure
                                                they help to signal to project planners                 data bases will continue to improve
                                                                                                                                                               suitable trees are available for roosting
                                                an area that is likely to be used by                    post-listing.
                                                                                                                                                               northern long-eared bats. Further, forest
                                                northern long-eared bats in the future                     9. Comment: Peer reviewer expressed
                                                                                                                                                               management can help to increase prey
                                                (as this species has a high degree of site              concern with allowing lethal take of
                                                                                                                                                               availability or suitability of foraging
                                                fidelity). We refined the protection for                northern long-eared bats from human
                                                                                                                                                               habitat. Please see our discussion above
                                                known, occupied maternity roosts to                     dwellings.
                                                                                                                                                               under Forest Management for additional
                                                make it as practical to implement as                       Our Response: We encourage the non-
                                                                                                                                                               details. Incidental take resulting from
                                                possible in order to minimize the                       lethal removal of northern long-eared
                                                                                                                                                               forest management is not prohibited
                                                disincentive created for conducting                     bats from human structures, preferably
                                                                                                                                                               pursuant to this final 4(d) rule provided
                                                surveys. Many forest managers                           by excluding them outside of the
                                                                                                                                                               conservation measures to protect known
                                                implement similar types of relatively                   maternity period, whenever possible.
                                                                                                                                                               hibernacula and known maternity roost
                                                small seasonal buffers to protect other                 However, because of the potential for
                                                                                                                                                               trees are employed.
                                                species of sensitive wildlife (e.g.,                    human health considerations, we have                      13. Comment: Commenters suggested
                                                around nesting raptors) and therefore                   not required this as part of the exception             that the Service consider exemptions for
                                                we do not view this provision as a real                 to the purposeful take prohibition. We                 sustainable forest practices
                                                disincentive to conducting surveys.                     have limited this take to houses,                      implemented under a sustainable forest
                                                Please see the Conservation Measure 2:                  garages, barns, sheds, and other                       management plan or sustainable forestry
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                                                Tree Removal Near Known Maternity                       buildings designed for human entry.                    certificate program.
                                                Roost Trees section of this rule for                    Public Comments                                           Our Response: We considered
                                                additional details. We believe that the                                                                        incorporating other possible
                                                seasonal restriction helps to protect the               General                                                conservation measures related to forest
                                                most vulnerable life stages, in this case                 10. Comment: Commenters from                         management and conversion. However,
                                                the non-volant pups, and is adequate for                many development sectors requested                     given the overall small percentage of the
                                                the purposes of this rule.                              that their activities be included in the               species’ range potentially affected by


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                                                1914              Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations

                                                these activities in any given year, it was              maternity/pup season. Forest                           project proponents must apply
                                                not clear that additional conditions                    management should only be done in a                    conservation measures to avoid habitat
                                                related to incidental take from forest                  manner that retains sufficient vegetative              removal around hibernacula and to
                                                management or conversion would                          cover and protects northern long-eared                 avoid cutting or destroying known,
                                                meaningfully change the conservation                    bats at the maternity colony level.                    occupied maternity roost trees or any
                                                outlook for the species. Further, adding                   Our Response: We considered                         other trees within a 150-foot radius from
                                                protections with uncertain benefits, but                incorporating other possible                           the maternity roost tree during June and
                                                with large potential public impacts can                 conservation measures related to forest                July.
                                                hinder support for species conservation.                management and conversion. However,                      19. Comment: Commenters stated that
                                                Incidental take resulting from forest                   given the overall small percentage of the              take of northern long-eared bat in
                                                management is not prohibited pursuant                   species’ range potentially affected by                 human dwellings should not be
                                                to this final 4(d) rule provided                        these activities in any given year, it was             exempted and requested that the Service
                                                conservation measures to protect known                  not clear that additional conditions                   provide rationale for determining that
                                                hibernacula and known, occupied                         related to the incidental take from forest             this exemption is necessary.
                                                maternity roost trees are employed.                     management or conversion would                            Our Response: We encourage the non-
                                                  14. Comment: Commenters stated that                   meaningfully change the conservation                   lethal removal of northern long-eared
                                                the Service should focus on the                         outlook for the species. Further, adding               bats from human structures whenever
                                                elimination of WNS rather than                          protections with uncertain benefits, but               possible, preferably by excluding them
                                                regulating timber harvest in summer                     with large potential public impacts can                from the structure outside of the
                                                habitat.                                                hinder support for the species                         maternity period. However, because of
                                                   Our Response: Efforts to address the                 conservation. We have determined that                  the potential for human health
                                                threat posed by WNS are on-going by                     protection of known, occupied                          considerations, we have not required
                                                the Service and many partners across                    maternity roost trees during the months                this as part of the exception to the
                                                the species range. Incidental take                      of June and July is an adequate                        purposeful take prohibition. Please see
                                                resulting from forest management or                     conservation measure for the protection                the discussion under Exceptions to the
                                                forest conversion is not prohibited                     of non-volant pups.                                    Purposeful Take Prohibition in this rule
                                                pursuant to this final 4(d) rule provided                  17. Comment: Commenter(s)                           for additional details. Take of northern
                                                conservation measures to protect known                  suggested an exemption for invasive                    long-eared bats to remove them from
                                                hibernacula and known, occupied                         species management in forested                         human structures is not prohibited.
                                                maternity roost trees are employed.                     landscapes.
                                                   15. Comment: A commenter stated                         Our Response: Outside of                            Hazardous Tree Removal
                                                that the Service should halt commercial                 hibernacula, this final rule does not                     20. Comment: Several comments
                                                timber harvest and another commenter                    prohibit take from activities other than               requested clarification and/or expansion
                                                suggested restricting the removal of                    tree removal. Therefore, incidental take               of the exception to take for removal of
                                                snags and coarse woody debris in areas                  associated with management of invasive                 hazardous trees.
                                                populated by the species.                               species using pesticides or other                         Our Response: Our intent is to
                                                   Our Response: The northern long-                     interventions is not prohibited. Where                 provide for the removal of hazardous
                                                eared bat is not limited in terms of                    intervention involves tree removal,                    trees for the protection of human life
                                                habitat availability for feeding, breeding,             conservation measures must be followed                 and property. This is not the same as
                                                and sheltering in the summer (non-                      to comply with this rule. However,                     hazard tree removal within the context
                                                hibernating) months. Please see the                     entities that cannot apply the required                of forest management or rights-of-way
                                                discussions under Forest Management                     conservation measures have other                       management where hazard trees are
                                                and Forest Conversion above in this                     means to have take excepted, such as                   identified as trees that are in danger of
                                                rule. We have carefully considered the                  section 10 permits or section 7                        falling. Incidental take of northern long-
                                                value of habitat protection for the                     incidental take authorization.                         eared bats from hazardous tree removal
                                                species. We have determined that                                                                               in the context of rights-of-way
                                                protection of summer habitat is not                     Human Structures
                                                                                                                                                               management is not prohibited by the
                                                required for species conservation except                   18. Comment: Commenters suggested                   final 4(d) rule provided conservation
                                                where trees may be occupied by young,                   expansion of the definition of human                   measures to protect known hibernacula
                                                non-volant (flightless) pups and for                    structures/dwellings to include bridges,               and known, occupied maternity roost
                                                areas immediately surrounding                           culverts, cattle passes, and other                     trees are applied.
                                                hibernacula where they swarm and feed                   human-made structures.
                                                just prior to hibernation and when they                    Our Response: This final rule does not              Minimal Tree Removal
                                                emerge from hibernation in the spring.                  prohibit direct take of northern long-                    21. Comment: Several commenters
                                                Due to this swarming behavior and the                   eared bats occupying human structures                  requested that minimal tree removal be
                                                vulnerability of bats when hibernating,                 defined as houses, garages, barns, sheds,              expanded to a larger acreage.
                                                we have determined that take                            and other buildings designed for human                    Our Response: Conversion of forested
                                                prohibitions are necessary and advisable                entry. While we encourage landowners                   cover to alternate uses is not prohibited
                                                in winter habitat (hibernacula), where                  and project proponents to find other                   under this final rule, provided that
                                                bats are subject to the effects of WNS.                 mechanisms to avoid killing or injuring                conservation measures are followed
                                                In addition, we have determined that                    bats that occupy bridges, culverts, and                when those activities occur within the
                                                protection of known, occupied                           other structures, incidental take is not               WNS zone. For a discussion of this
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                                                maternity roost trees is necessary and                  prohibited by this rule. While bridge                  issue, please see Forest Conversion
                                                advisable in order to protect young                     and culvert use for the species has been               section in this rule.
                                                pups.                                                   documented, it is relatively uncommon                     22. Comment: Several commenters
                                                   16. Comment: The Service should                      compared to tree or other types of roost               stated that the exemption for minimal
                                                increase protections to avoid impacts to                sites (e.g., barns) and, therefore, did not            tree removal should be expanded to
                                                bats from the point that they emerge                    warrant specific provisions in this final              other (non-forest) industry entities and
                                                from hibernation to the end of the                      rule. Within the WNS zone, however,                    should include all activities that have a


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                                                                  Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations                                           1915

                                                minimal effect on the northern long-                    should be expanded to include new                      maintenance, repair, and creation of
                                                eared bat.                                              rights-of-way and transmission                         rights-of-way.
                                                  Our Response: Conversion of forested                  corridors.                                                Our Response: The northern long-
                                                acreages to alternate uses is not                          Our Response: Incidental take                       eared bat is not limited in terms of
                                                prohibited under this final rule,                       attributable to maintenance,                           habitat availability for feeding, breeding,
                                                provided that conservation measures are                 development, and rights-of-way                         and sheltering in the summer (non-
                                                followed. This is applicable to all                     expansion is not prohibited by this final              hibernating) months. We have carefully
                                                entities that may engage in activities                  4(d) rule, provided conservation                       considered the value of habitat
                                                that remove trees or convert forested                   measures contained herein are followed                 protection for the species. We have
                                                acres. See the Forest Conversion section                when activities occur within the WNS                   determined that protection of summer
                                                in this rule.                                           zone.                                                  habitat is not required for species
                                                                                                           27. Comment: Commenter(s) disagree
                                                Oil and Gas Industry                                                                                           conservation except where trees are
                                                                                                        with the Service’s assertion that
                                                                                                                                                               known to be occupied by northern long-
                                                  23. Comment: A number of                              vegetation removal within or adjacent to
                                                                                                        rights-of-way is a small-scale alteration              eared bats when the young are non-
                                                commenters from the oil and gas
                                                                                                        of habitat.                                            volant (flightless) and for areas
                                                industry stated that the industry should
                                                                                                           Our Response: It is within the context              immediately surrounding hibernacula
                                                be included within exemptions from
                                                                                                        of the species range and potential for                 where they swarm and feed just prior to
                                                take prohibitions because: (1) Their
                                                                                                        available habitat that right-of-way                    hibernation and when they emerge from
                                                impact on northern long-eared bat
                                                                                                        development, maintenance or expansion                  hibernation in the spring.
                                                habitat is small compared to forest
                                                management impacts; (2) habitat is re-                  are small scale alterations of forest                  Solar Energy
                                                vegetated following pipeline                            habitat. The extent of conversion from
                                                installation; (3) oil and gas exploration               forest to other land cover types has been                30. Comment: Commenter(s)
                                                and transport are not the stated primary                fairly consistent with conversion to                   requested that solar energy development
                                                threat to the species (WNS is the                       forest (cropland reversion/plantings).                 be provided an exemption under the
                                                primary threat); and (4) adequate                       Further, the recent past and projected                 4(d) rule.
                                                regulatory mechanisms exist for                         amounts of forest loss to conversion                     Our Response: Solar energy
                                                mitigating industry environmental                       from all sources was and is anticipated                developers will need to consider the
                                                impacts.                                                to be only a small percentage of the total             impacts of their development and
                                                  Our Response: Take of northern long-                  amount of forest habitat. For example by               operations in light of the prohibitions of
                                                eared bats attributable to habitat                      2060, 4 to 8 percent of forest area found              this rule. Incidental take outside of the
                                                conversion and habitat loss is not                      in 2007 across the conterminous United                 WNS zone is not prohibited. Incidental
                                                prohibited under this final 4(d) rule,                  States is expected to be lost (U.S Forest              take from tree-removal activities within
                                                provided that developers and project                    Service 2012, p. 12). We have not                      the WNS zone is prohibited under
                                                proponents follow conservation                          broadened the incidental prohibition                   specific conditions related to known
                                                measures described herein when                          related to habitat loss because WNS is                 hibernacula and known, occupied
                                                activities occur within the WNS zone.                   the predominant threat to the species.                 maternity roost trees (see Activities
                                                See the Forest Conversion section in                    Summer habitat does not now or in the                  Involving Tree Removal section above
                                                this rule.                                              future appear likely to be a limiting                  for details).
                                                                                                        factor for the species; therefore, we have
                                                Rights-of-Way                                           focused the protections on vulnerable                  Agriculture
                                                  24. Comment: Commenter(s) stated                      individuals in summer habitat and
                                                                                                                                                                  31. Comment: Commenter(s)
                                                that loss of habitat attributable to                    protecting the winter habitat, where
                                                                                                                                                               requested that agricultural activities be
                                                clearing for linear projects is miniscule               sensitivity to the effects of WNS is
                                                                                                                                                               included in the suite of exempted
                                                compared to habitat conversion due to                   heightened.
                                                                                                           28. Comment: Commenter(s)                           activities under the 4(d) rule.
                                                forest management.
                                                   Our Response: Incidental take                        requested that the Service expand the                     Our Response: We have substantially
                                                attributable to maintenance,                            rights-of-way exemption to include                     revised the prohibitions and exceptions
                                                development, and rights-of-way                          access roads and infrastructure required               in this final rule that may apply to
                                                expansion is not prohibited by this final               to deliver services.                                   agricultural activities. Agricultural
                                                4(d) rule, provided conservation                           Our Response: Incidental take                       producers/operators will need to
                                                measures contained herein are followed                  attributable to maintenance,                           consider the impacts of their activities
                                                when activities occur within the WNS                    development, and rights-of-way                         in light of the prohibitions of this rule.
                                                zone.                                                   expansion is not prohibited by this final              Incidental take outside of the WNS zone
                                                   25. Comment: Commenter(s) stated                     4(d) rule, provided conservation                       is not prohibited. Incidental take from
                                                that the exception, as proposed and                     measures contained herein are followed                 tree removal activities within the WNS
                                                implemented via the interim rule,                       when activities occur within the WNS                   zone is prohibited under specific
                                                should be expanded to greater than 100-                 zone. This includes related activities                 conditions related to known hibernacula
                                                feet and should be clarified.                           such as access road clearing and                       and known, occupied maternity roost
                                                   Our Response: Incidental take                        facilities related to delivery of services.            trees (see Activities Involving Tree
                                                attributable to maintenance,                            In the case where tree removal is the                  Removal, above, for details). This final
                                                development, and rights-of-way                          activity in question, incidental take is               rule has been restructured in a manner
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                                                expansion is not prohibited by this final               not prohibited provided that the                       that it applies prohibitions where
                                                4(d) rule, provided conservation                        conservation measures herein are                       necessary and advisable for
                                                measures contained herein are followed                  followed when those activities occur                   conservation of the species. Therefore,
                                                when activities occur within the WNS                    within the WNS zone.                                   agricultural development and
                                                zone.                                                      29. Comment: Commenter suggested                    operations do not need to be specifically
                                                   26. Comment: Commenter(s) stated                     that the final 4(d) rule should prohibit               ‘‘excepted’’ in order to apply the rule’s
                                                that the exception for rights-of-way                    all tree clearing activities related to the            provisions.


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                                                1916              Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations

                                                Caves and Mines                                         their normal hibernation behaviors by                  Hibernacula of this rule for our
                                                  32. Comment: Commenter(s)                             the mining operations, we do not                       explanation of the need for this buffer.
                                                requested an exemption for show caves                   consider those activities to be a ‘‘take’’             As described in that section, we have
                                                and cave tours.                                         of the bats.                                           prohibited incidental take of northern
                                                  Our Response: Hibernating bats are                      34. Comment: Commenter(s)                            long-eared bats under specific tree-
                                                very sensitive to disturbance as                        suggested that activities designed to re-              removal circumstances; however, that
                                                discussed in greater detail under the                   claim abandoned mines or maintain                      does not mean that all activities
                                                Hibernacula section of this document.                   cave environments for the benefit of                   involving tree-removal activities within
                                                                                                        wildlife species should be exempt under                the 0.25-mile (0.4-km) buffer of
                                                This final rule prohibits the incidental
                                                                                                        the 4(d) rule.                                         hibernacula will result in take. For
                                                take of northern long-eared bats in
                                                                                                          Our Response: We agree that                          example, a timber harvest might be
                                                hibernacula inside the WNS zone as
                                                                                                        beneficial reclamation and maintenance                 conducted within 0.25 miles (0.4 km) of
                                                well as the purposeful take (e.g.,
                                                                                                        should be encouraged. However,                         a hibernaculum at a time when bats are
                                                purposefully harassing or killing) of
                                                                                                        exception from take prohibitions                       unlikely to be roosting in trees within
                                                northern long-eared bats in hibernacula
                                                                                                        through a species-specific 4(d) rule is                the buffer (e.g., winter) that fully
                                                both inside and outside of the WNS
                                                                                                        not the appropriate mechanism for                      protects any bats in the hibernaculum as
                                                zone. When this species occupies caves
                                                                                                        authorizing this activity. Where                       well as the hibernaculum’s suitability
                                                or mines used by people regardless of
                                                                                                        abandoned mines and cave                               for bats (i.e., bat’s access, microclimate),
                                                the purpose, the provisions of this 4(d)
                                                                                                        environments are in use by northern                    and does not significantly change the
                                                rule apply. Show cave or mine activities
                                                                                                        long-eared bats, take associated with                  suitability of the habitat for foraging by
                                                inside the WNS zone that do not result
                                                                                                        maintenance is prohibited; however, we                 northern long-eared bats or perhaps
                                                in the incidental take of northern long-
                                                                                                        encourage project proponents to work                   even improves prey availability. In such
                                                eared bats are not prohibited. In other
                                                                                                        with the Service to implement best                     a case, the timber harvest, although
                                                words, if northern long-eared bats are
                                                                                                        management practices to avoid or                       closer than 0.25 miles (0.4 km) to the
                                                not being disrupted from their normal                                                                          hibernaculum, is not likely to result in
                                                                                                        minimize the effects of their actions in
                                                hibernation behaviors (e.g., by avoiding                                                                       incidental take, so we would not
                                                                                                        the interest of habitat improvement. We
                                                areas with hibernating bats, limiting                                                                          recommend that the timber harvester
                                                                                                        will work with project proponents to
                                                noise and lighting in areas used by bats),                                                                     seek authorization for incidental take
                                                                                                        determine alternate ways to authorize
                                                we do not consider human use of the                                                                            pursuant to the Act. Further, while
                                                                                                        activities, such as section 10 permits or
                                                cave or mine to be a ‘‘take’’ of the bats.                                                                     incidental take of northern long-eared
                                                                                                        section 7 incidental take authorization.
                                                  33. Comment: Commenter(s) stated                                                                             bats within that buffer is prohibited (in
                                                that an exemption should be made                        Mosquito Control                                       the WNS zone), it may be authorized on
                                                available for mining, mineral                             35. Comment: Commenter challenges                    a case-by-case basis with further
                                                exploration, and coal extraction                        the Service’s assertion that chemicals                 coordination with the Service at a local
                                                activities.                                             used in mosquito control (malathion                    level. Take may be authorized through
                                                   Our Response: Incidental take of                     and others of comparable risk to                       section 10 or section 7 of the Act. In
                                                northern long-eared bats that results                   mammals) pose a risk to northern long-                 addition, it is our expectation that
                                                from tree-removal activity, including                   eared bats; commenter further requests                 project modifications may be made that
                                                mining operations, is prohibited in                     an exemption for mosquito control                      would protect the hibernaculum and
                                                some circumstances (see Activities                      activities, especially where there is a                allow for the project proponent’s
                                                Involving Tree Removal, above).                         public health risk.                                    objectives to be met.
                                                However, hibernating bats are very                        Our Response: Please see the                            37. Comment: Commenter(s) seek
                                                sensitive to disturbance, as discussed in               Environmental Contaminants section of                  clarification on whether the buffer and
                                                greater detail under the Hibernacula                    this rule for details concerning our                   prohibition to clearcutting (within the
                                                section of this rule. This final rule                   evaluation of the risks from pesticide                 buffer) is a year-round restriction.
                                                prohibits the incidental take of northern               applications. After careful consideration                 Our Response: Yes, the protection of
                                                long-eared bats in hibernacula inside                   of the available information, we do not                the hibernaculum and a buffer around it
                                                the WNS zone as well as the purposeful                  include in this rule a prohibition on the              is a year round protective measure and
                                                take (e.g., purposefully harassing or                   incidental take of northern long-eared                 applies to all types of tree-removal
                                                killing) of northern long-eared bats in                 bats as result of pesticide application                activities in the WNS zone.
                                                hibernacula both inside and outside of                  provided the application is a ‘‘lawful                    38. Comment: Commenter(s)
                                                the WNS zone. Inside the WNS zone,                      activity,’’ that is, it must comply all                suggested that the buffer around
                                                the take of northern long-eared bats in                 applicable State laws. Any northern                    hibernacula be limited to fall swarming
                                                mines and man-made tunnels for                          long-eared bat unlawfully taken                        and spring emergence when northern
                                                mineral or coal extraction includes any                 pursuant to a State pesticide law would                long-eared bats are present.
                                                activity that kills, injures, harms, or                 be a violation of this final 4(d) rule.                   Our Response: We have determined
                                                harasses the species. Mining, mineral                                                                          that protective measures must be
                                                exploration, and coal extraction                        Adequacy and Clarity of 0.25 Mile                      considered year-round for several
                                                activities will need to work with the                   Hibernacula Buffer                                     reasons, including that habitat lost
                                                Service to find alternative means to                      36. Comment: Commenter(s)                            outside of the spring emergence and fall
                                                authorize take, such as through a section               suggested that this buffer is too                      swarming period could affect the
                                                10 permitting process or section 7                      restrictive for landowners.                            suitability of those habitats later during
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                                                process where applicable. Mining                          Our Response: The Service has                        spring emergence or fall swarming.
                                                activities inside the WNS zone that do                  determined that a protective buffer                    Further, we have included the buffer on
                                                not result in the incidental take of                    around known hibernacula is necessary                  hibernacula for several reasons beyond
                                                northern long-eared bats are not                        and advisable for the conservation of the              protecting foraging habitat during fall
                                                prohibited. In other words, if northern                 species. Please see the discussion under               swarming and spring emergence. In
                                                long-eared bats are not being killed,                   Conservation Measure 1: Tree Removal                   particular, the buffer will help to protect
                                                injured, or otherwise disrupted from                    Near Known Northern Long-eared Bat                     the micro-climate characteristics of


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                                                                  Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations                                          1917

                                                hibernacula and other entrances used by                 Maternity Roost Tree Restrictions                      Residential Housing Development
                                                bats that may not be reflected in the                      41. Comment: Commenter(s)                             45. Comment: Commenter(s)
                                                primary location information for                        expressed concerns about having                        requested that northern long-eared bat
                                                hibernacula. For example, many caves                    adequate information to identify                       take be excepted for the purposes of
                                                or abandoned mines used may have                        maternity roost trees.                                 residential housing development.
                                                entrances used by bats that are not                        Our Response: We recognize the                        Our Response: Take resulting from
                                                reflected in the general location                       challenges associated with data sharing.               removal of summer habitat (tree
                                                information for those sites that are used               Please see response to Comment 40.                     removal) is not prohibited provided the
                                                by people; a buffer helps to protect less               While not required by this rule, the                   conservation measures set forth in this
                                                prominent features that may be                          Service recommends summer surveys to                   rule are followed when the habitat
                                                important to bats. Projects may be able                 definitively locate maternity roost trees.             removal occurs within the WNS zone.
                                                to be planned or modified within those                     42. Comment: Commenter(s)                           The provisions of this final rule have
                                                buffer areas to retain sufficient habitat               requested that we clarify that roost trees             been restructured to clarify prohibitions
                                                and avoid harm; however, the Service                    means maternity roost trees.                           rather than rely on a list of excepted
                                                considers coordination on a case-by-                       Our Response: We have made this                     activities.
                                                case basis to be important to assure                    final 4(d) rule specific to maternity roost
                                                necessary conservation.                                 trees.                                                 Wind Energy Development
                                                  39. Comment: Several commenter(s)
                                                                                                           43. Comment: Commenter(s)                              46. Comment: Commenter(s)
                                                suggested an increased buffer area
                                                                                                        expressed disagreement with the 0.25                   requested that northern long-eared bat
                                                around hibernacula would be more
                                                                                                        mile buffer around known, occupied                     take be excepted for the purposes of
                                                appropriate.
                                                   Our Response: We have revised the                    roost trees. Some commented that this                  renewable energy development and
                                                approach used in this final 4(d) rule to                buffer was too small, while some                       operation (wind energy).
                                                ensure that hibernating northern long-                  commented that it was too large.                          Our Response: Incidental take
                                                eared bats in the WNS zone are                             Our Response: In the interim 4(d) rule              resulting from wind energy
                                                protected from incidental take                          (80 FR 17974; April 2, 2015), the buffer               development and operation is not
                                                independent of the buffer size used in                  around known, occupied roost trees                     prohibited, provided that the
                                                the conservation measure. In addition,                  applied only to some types of tree-                    conservation measures set forth in this
                                                all northern long-eared bats both inside                removal activities (e.g., forest                       rule are followed to protect hibernacula
                                                and outside of the WNS zone are                         management, rights-of-ways, prairie                    and known, occupied maternity roost
                                                protected from purposeful take (e.g.,                   management) and excluded only                          trees. We strongly encourage voluntary
                                                killing or intentionally harassing                      clearcuts (and similar harvest methods).               conservation measures and best
                                                northern long-eared bats), including                    Given the relatively small percent of                  management practices such as
                                                while in hibernacula where they are                     forest habitat anticipated to be impacted              feathering or elevated cut-in speeds to
                                                most vulnerable. We have retained the                   by forest management or conversion (see                reduce impacts to northern long-eared
                                                0.25-mile buffer (0.25-mile radius from                 Forest Management and Forest                           bats and other bats; however, we have
                                                known hibernacula entrance/access                       Conversion, above of this rule for more                not prohibited incidental take
                                                points used by bats) to further protect                 details), we revised the buffer around                 attributable to wind energy in this final
                                                the hibernacula and associated forested                 the known maternity roost trees. As                    rule. Please see the Wind Energy
                                                habitat for several reasons (see                        explained in more detail under                         Facilities section of this rule for
                                                discussion above under Conservation                     Conservation Measure 2: Tree Removal                   additional details.
                                                Measure 1: Tree Removal Near Known                      Near Known Maternity Roost Trees, we
                                                                                                        have made the buffer more broadly                      Natural Resource Management
                                                Northern Long-eared Bat Hibernacula).
                                                   40. Comment: Commenter(s)                            applicable to all tree-removal activities,                47. Comment: Commenter(s)
                                                expressed concern with implementing                     but have narrowed it in size to provide                requested that northern long-eared bat
                                                measures when they do not have data/                    protection for the maternity roost tree,               take be excepted when activities are
                                                information on known hibernacula.                       while minimizing the potential that the                included in Department of Defense
                                                   Our Response: The Service recognizes                 protective measure would serve as                      integrated natural resource management
                                                the challenges associated with data                     impediment to conducting new surveys.                  plans, providing for activities such as
                                                sharing and data management. Many                       We have reduced the buffer around                      recreational activities, burns, and other
                                                states share data management concerns                   known, occupied maternity roost trees                  temporary but insignificant effects on
                                                and guard data carefully. We encourage                  to a radius of 150 feet around the                     the northern long-eared bat.
                                                landowners to continue to work with                     known, occupied maternity roost tree.                     Our Response: Incidental take
                                                your State natural resources and natural                   44. Comment: Commenter(s) stated                    resulting from activities described as
                                                heritage staff to evaluate your                         that the Service should require surveys                recreational activities and beneficial
                                                ownership for the presence of these                     to determine where roost trees are                     wildlife habitat management/
                                                important resources. When seeking                       located.                                               maintenance is not prohibited, provided
                                                information on the presence of                             Our Response: The Act does not                      that the conservation measures set forth
                                                hibernacula within your project                         require a private landowner to survey                  in this rule are followed when the
                                                boundary, our expectation is that a                     his or her property to determine                       activity occurs inside the WNS zone.
                                                project proponent will complete due                     whether endangered or threatened                       We have completed a section 7 analysis
                                                diligence to determine available data.                  wildlife and plants occupy their land.                 on the provisions of this final 4(d) rule
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                                                However, if information is not available,               We encourage landowners to voluntarily                 to ensure that actions completed in
                                                we recognize that the project proponent                 seek additional information to conserve                accordance with the final rule are not
                                                that has made reasonable efforts to                     natural resources in their land use/land               likely to jeopardize the continued
                                                determine whether there are known                       management actions; however, we will                   existence of the species. Where these
                                                hibernacula on the property is in the                   not require surveys to locate northern                 resource management activities do not
                                                position of not knowing if no data have                 long-eared bats and maternity roost trees              fit within the final rule, section 7
                                                been provided.                                          on private property.                                   consultation would need to be


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                                                1918              Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations

                                                completed to authorize incidental take                  as prohibitions is beyond the scope of                 species listed as threatened species.
                                                of the northern long-eared bat.                         this rule. We have addressed                           Conservation is defined in the Act to
                                                                                                        hibernacula protection provisions in                   mean ‘‘to use and the use of all methods
                                                Compliance and Monitoring
                                                                                                        this rule under the section entitled                   and procedures which are necessary to
                                                   48. Comment: Commenter(s)                            Conservation Measure 1: Tree Removal                   bring any endangered species or
                                                recommended that surveys be required                    Near Known Northern Long-eared Bat                     threatened species to the point at which
                                                and that landowners be required to                      Hibernacula. Protections in this final                 the measures provided pursuant to [the
                                                report on their activities in order to                  rule are adequate to protect the species.              Act] are no longer necessary.’’
                                                receive the benefits of the 4(d) rule.                     In addition to the Center’s suggested                  The courts have recognized the extent
                                                   Our Response: While we welcome                       language for hibernacula prohibitions,                 of the Secretary’s discretion under this
                                                landowners’ efforts to determine where                  they recommended language regarding                    standard to develop rules that are
                                                bats may be located on their property,                  prohibitions for prescribed burning and                appropriate for the conservation of a
                                                the Act does not require that a                         aerial spraying. Based on our analysis,                species. For example, the Secretary may
                                                landowner survey his or her property to                 we conclude that prescribed burning                    find that it is necessary and advisable
                                                find species. We are not mandating that                 and aerial spraying do not have a                      not to include a taking prohibition, or to
                                                surveys be completed as part of this                    measurable population-level impact on                  include a limited taking prohibition. See
                                                rule.                                                   the species and regulation of those                    Alsea Valley Alliance v Lautenbacher,
                                                Alternate Section 4(d) Provisional                      activities will not meaningfully impact                2007 U.S. Dist. Lexis 60203 (D. Or.
                                                Language                                                the species’ ability to recover. For                   2007); Washington Environmental
                                                                                                        further information on prescribed fire                 Council v. National Marine Fisheries
                                                   49. Comment: One organization                        impacts, see Prescribed Fire above. For                Service, 2002 U.S. Dist. Lexis 5432
                                                commented on behalf of its members                      further information on aerial spraying of              (W.D. Wash. 2002). In addition, as
                                                and 14 other environmental                              pesticides, please see the Environmental               affirmed in State of Louisiana v. Verity,
                                                organizations (collectively referenced as               Contaminants section above.                            853 F. 2d 322 (5th Cir. 1988), the rule
                                                ‘‘the Center’’) in support of the adoption                 The final prohibition suggested by the              need not address all the threats to the
                                                of a different 4(d) rule and in opposition              Center was the operation of utility-scale              species. As noted by Congress when the
                                                of the Service’s proposed and the                       wind projects, specifically during the                 Act was initially enacted, ‘‘once an
                                                interim 4(d) rules.                                     hours from dusk to sunrise during the                  animal is on the threatened list, the
                                                   Our Response: The remaining                          fall swarming season, at low wind                      Secretary has an almost infinite number
                                                paragraphs (under the heading                           speeds, and within 5 miles of a                        of options available to him [her] with
                                                Summary of Comments and                                 hibernaculum. Incidental take resulting                regard to the permitted activities for
                                                Recommendations on the Proposed and                     from the operation of wind energy                      those species. [She] may, for example,
                                                Interim4(d) Rules) pertain to the                       facilities is not prohibited by this final             permit taking, but not importation of
                                                comments we received from the Center.                   4(d) rule and a complete discussion of                 such species,’’ or she may choose to
                                                With respect to the overarching                         known impacts to the species may be                    forbid both taking and importation but
                                                comment that our 4(d) rule does not                     found in the Wind Energy Facilities                    allow the transportation of such species,
                                                conserve the species, we believe that                   section above.                                         as long as the prohibitions, and
                                                our final 4(d) rule provides for the                       Finally, the Center provided                        exceptions to those prohibitions, will
                                                ‘‘necessary and advisable’’ conservation                suggested regulatory text for exemptions               ‘‘serve to conserve, protect, or restore
                                                of the species, as described herein. For                from prohibitions that included                        the species concerned in accordance
                                                further information, please see our                     language for seasonal restrictions,                    with the purposes of the Act’’ (H.R. Rep.
                                                Determination section, below.                           clearing restrictions, mandatory                       No. 412, 93rd Cong., 1st Sess. 1973).
                                                   With respect to the Center’s proposed                measures for hibernacula protection                       Section 9 prohibitions make it illegal
                                                4(d) language, we note that the proposed                (gate installation), water quality                     for any person subject to the jurisdiction
                                                language defines specific prohibitions                  protection measures, and data collection               of the United States to violate any
                                                and would make a regulatory                             and reporting requirements. We                         regulation pertaining to any threatened
                                                determination of ‘‘take’’ to include a                  recognize the effort that has gone into                species of fish or wildlife listed
                                                number of actions. These include cave                   the development of this alternative                    pursuant to section 4 of the Act and
                                                and mine entry without implementing                     language. However, we have carefully                   promulgated by the Secretary pursuant
                                                decontamination protocols; transporting                 considered the measures that are                       to authority provided by the Act. Under
                                                equipment into caves and mines or                       necessary for the protection of the                    this final 4(d) rule, incidental take of the
                                                between caves and mines between the                     species. Our final rule has been                       northern long-eared bat will not be
                                                WNS zone and non-WNS zone; cave and                     developed based on the Service’s desire                prohibited outside the WNS zone.
                                                mine entry during hibernation periods;                  to implement protective measures that                  Incidental take also will not it be
                                                activities associated with hydraulic                    will make a meaningful impact on                       prohibited within the WNS zone,
                                                fracturing within 5 miles of a                          species conservation and recovery. As                  outside of hibernacula, provided that it
                                                hibernaculum, within 1.5 miles of an                    stated elsewhere in this document (see                 occurs more than 0.25 miles (0.4 km)
                                                occupied roost tree, or within 3 miles of               Determination section, below), we have                 from a known hibernacula and does not
                                                an acoustic detection or bat capture                    provided regulatory flexibility while                  result from an activity that cuts or
                                                record; noise disturbance activities                    implementing protective measures                       destroys known occupied maternity
                                                within a 0.5-mile radius of a                           where we have determined those                         roost trees, or any other trees within a
                                                hibernaculum during the hibernation                     measures to be necessary and advisable                 150-foot (45-m) radius from the
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                                                period; and disruption of water sources                 for conservation of the species.                       maternity tree, during the pup season
                                                within hibernacula. With respect to                                                                            (June 1 through July 31).
                                                protection of hibernacula, take of                      Determination                                             Accordingly, we have determined that
                                                northern long-eared bats is prohibited.                   Section 4(d) of the Act states that ‘‘the            this provision is necessary and
                                                Establishing the causal connection                      Secretary shall issue such regulations as              advisable for the conservation of the
                                                between a variety of activities such as                 she deems ‘necessary and advisable to                  northern long-eared bat as explained
                                                those the Center proposed to be defined                 provide for the conservation’ ’’ of                    below.


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                                                                  Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations                                           1919

                                                   Although not fully protective of every               of the species. Furthermore, she                       describes the effects of the rule on small
                                                individual, the conservation measures                   acknowledges the importance of                         entities (small businesses, small
                                                identified in this final rule help protect              addressing the threat of WNS as the                    organizations, and small government
                                                maternity colonies. This final species-                 primary measure to arrest and reverse                  jurisdictions). However, no regulatory
                                                specific rule under section 4(d) of the                 the decline of the species. Nothing in                 flexibility analysis is required if the
                                                Act provides the flexibility for certain                this 4(d) rule affects other provisions of             head of the agency certifies the rule will
                                                activities to occur that have not been the              the Act, such as designation of critical               not have a significant economic impact
                                                cause of the species’ imperilment, while                habitat under section 4, recovery                      on a substantial number of small
                                                still promoting conservation of the                     planning under section 4(f), and                       entities. SBREFA amended the RFA to
                                                species across its range.                               consultation requirements under section                require Federal agencies to provide a
                                                   The northern long-eared bat was                      7.                                                     statement of the factual basis for
                                                listed as a threatened species under the                                                                       certifying that the rule will not have a
                                                Act, with an interim rule under section                 Required Determinations
                                                                                                                                                               significant economic impact on a
                                                4(d), on April 2, 2015 (80 FR 17974). At                Regulatory Planning and Review                         substantial number of small entities.
                                                that time, the Service invited public                                                                          Thus, for a regulatory flexibility analysis
                                                comment on the interim 4(d) rule for 90                 (Executive Orders 12866 and 13563)
                                                                                                                                                               to be required, impacts must exceed a
                                                days, ending July 1, 2015. The Service                    Executive Order 12866 provides that                  threshold for ‘‘significant impact’’ and a
                                                had already received comments for 60                    the Office of Information and Regulatory               threshold for a ‘‘substantial number of
                                                days on its proposed 4(d) rule (80 FR                   Affairs (OIRA) in the Office of                        small entities.’’ See 5 U.S.C. 605(b).
                                                2371; January 16, 2015). In total, the                  Management and Budget will review all                  Based on the information that is
                                                Service received approximately 40,500                   significant rules. OIRA has determined                 available to us at this time, we certify
                                                comments on the proposed and interim                    that this rule is not significant.                     that this rule will not have a significant
                                                4(d) rules. For a complete discussion of                Executive Order 13563 reaffirms the                    economic impact on a substantial
                                                the comments, as well as the Service’s                  principles of E.O. 12866 while calling                 number of small entities. The following
                                                response to comments, see Summary of                    for improvements in the nation’s                       discussion explains our rationale.
                                                Comments and Recommendations on                         regulatory system to promote                              On April 2, 2015 (80 FR 17974), we
                                                the Proposed and Interim 4(d) Rules,                    predictability, to reduce uncertainty,                 published the final determination to list
                                                above.                                                  and to use the best, most innovative,                  the northern long-eared bat as a
                                                   Because the primary threat to the                    and least burdensome tools for                         threatened species and an interim 4(d)
                                                northern long-eared bat is a fungal                     achieving regulatory ends. The                         rule. That rule became effective on May
                                                disease known as WNS, the Service has                   executive order directs agencies to                    4, 2015, and the interim 4(d) rule will
                                                tailored the final 4(d) rule to prohibit                consider regulatory approaches that                    remain in effect until this final rule
                                                the take of northern long-eared bats                    reduce burdens and maintain flexibility                becomes effective (see DATES, above).
                                                from certain activities within areas                    and freedom of choice for the public                   The interim 4(d) rule generally applies
                                                where they are in decline, as a result of               where these approaches are relevant,                   the prohibitions of 50 CFR 17.31 and
                                                WNS, and within these areas we apply                    feasible, and consistent with regulatory               17.32 to the northern long-eared bat,
                                                incidental take protection only to                      objectives. E.O. 13563 emphasizes                      which means that the interim rule,
                                                known, occupied maternity roost trees                   further that regulations must be based                 among other things, prohibits the
                                                and known hibernacula. These                            on the best available science and that                 purposeful take of northern long-eared
                                                protections will help to conserve the                   the rulemaking process must allow for                  bats throughout the species’ range, but
                                                northern long-eared bat during its most                 public participation and an open                       the interim rule includes exceptions to
                                                vulnerable life stages (from birth to                   exchange of ideas. We have developed                   the purposeful take prohibition. The
                                                flight, or volancy) and during spring and               this final 4(d) rule in a manner                       exceptions for purposeful take are: (1) In
                                                fall swarming (near hibernacula).                       consistent with these requirements.                    instances of removal of northern long-
                                                   In summary, this 4(d) rule is                                                                               eared bats from human structures (if
                                                necessary and advisable to provide for                  Regulatory Flexibility Act (5 U.S.C. 601
                                                                                                                                                               actions comply with all applicable State
                                                the conservation of the northern long-                  et seq.)
                                                                                                                                                               regulations); and (2) for authorized
                                                eared bat because it provides for                          Listing and status determinations                   capture, handling, and related activities
                                                protection of known maternity roost                     under the Endangered Species Act of                    of northern long-eared bats by
                                                trees and known hibernacula within the                  1973, as amended (Act; 16 U.S.C. 1531                  individuals permitted to conduct these
                                                WNS zone. In addition, promulgation of                  et seq.), and any prohibitions or                      same activities for other bat species
                                                this rule allows the conservation                       protective measures afforded the species               until May 3, 2016. Under the interim
                                                community to provide for species                        under the Act are exempt from the                      rule, incidental take is not prohibited
                                                conservation where it can affect change,                Regulatory Flexibility Act (RFA; 5                     outside the WNS zone if the incidental
                                                namely during the northern long-eared                   U.S.C. 601 et seq., as amended by the                  take results from otherwise lawful
                                                bat’s most vulnerable life stages and                   Small Business Regulatory Enforcement                  activities. Inside the WNS zone, there
                                                where hibernation occurs. This final                    Fairness Act (SBREFA) of 1996).                        are exceptions for incidental take for the
                                                4(d) rule allows the regulated public to                However, as this final 4(d) rule is being              following activities, subject to certain
                                                manage lands in a manner that is lawful                 promulgated following the final listing                conditions: Implementation of forest
                                                and compatible with species’ survival,                  of the northern long-eared bat, we                     management; maintenance and
                                                and it allows for protection of the                     evaluate whether the Regulatory                        expansion of existing rights-of-way and
                                                species in a manner that the Secretary                  Flexibility Act applies to this                        transmission corridors; prairie
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                                                deems to be necessary and advisable for                 rulemaking.                                            management; minimal tree removal; and
                                                the conservation of the northern long-                     Under the Regulatory Flexibility Act,               removal of hazardous trees for the
                                                eared bat. By this rule, the Secretary                  whenever an agency must publish a                      protection of human life and property.
                                                deems that the prohibition of certain                   notice of rulemaking for any proposed                     This final 4(d) rule does not generally
                                                take, which is incidental to otherwise                  or final rule, it must prepare and make                apply the prohibitions of 50 CFR 17.31
                                                lawful activities that take bat habitat, is             available for public comment a                         to the northern long-eared bat. This rule
                                                not necessary for the long-term survival                regulatory flexibility analysis that                   continues to prohibit purposeful take of


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                                                1920              Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations

                                                northern long-eared bats throughout the                 under the Act than those set forth in the              local, and [T]ribal governments under
                                                species’ range, except in certain cases,                interim 4(d) rule.                                     entitlement authority,’’ if the provision
                                                including in instances of removal of                       We completed an analysis of the                     would ‘‘increase the stringency of
                                                northern long-eared bats from human                     forested land area that may be impacted                conditions of assistance’’ or ‘‘place caps
                                                structures and for authorized capture,                  by this rulemaking. There are                          upon, or otherwise decrease, the Federal
                                                handling, and related activities of                     approximately 400,000,000 acres                        Government’s responsibility to provide
                                                northern long-eared bats by individuals                 (161,874,256 ha) of forested habitat                   funding,’’ and the State, local, or Tribal
                                                permitted to conduct these same                         across the range of the northern long-                 governments ‘‘lack authority’’ to adjust
                                                activities for other bat species until May              eared bat, which includes 37 States and                accordingly. At the time of enactment,
                                                3, 2016. After May 3, 2016, a permit                    the District of Columbia. This rule may                these entitlement programs were:
                                                pursuant to section 10(a)(1)(A) of the                  restrict land use activities on                        Medicaid; AFDC work programs; Child
                                                Act is required for the capture and                     approximately 200,000 acres (80,937                    Nutrition; Food Stamps; Social Services
                                                handling of northern long-eared bats.                   ha). This area constitutes less than 0.05              Block Grants; Vocational Rehabilitation
                                                                                                        percent of all forested habitat across the             State Grants; Foster Care, Adoption
                                                Under this rule, incidental take is still
                                                                                                        extensive range of the northern long-                  Assistance, and Independent Living;
                                                not prohibited outside the WNS zone.
                                                                                                        eared bat. Any impact in this very small               Family Support Welfare Services; and
                                                Within the WNS zone, incidental take is
                                                                                                        portion of forested habitat is not                     Child Support Enforcement. ‘‘Federal
                                                prohibited only if: (1) Actions result in               expected to affect a substantial number
                                                the incidental take of northern long-                                                                          private sector mandate’’ includes a
                                                                                                        of entities in any given sector, nor result            regulation that ‘‘would impose an
                                                eared bats in hibernacula; (2) actions                  in a significant economic impact on any
                                                result in the incidental take of northern                                                                      enforceable duty upon the private
                                                                                                        given entity. For the above reasons, we                sector, except (i) a condition of Federal
                                                long-eared bats by altering a known                     certify that the final rule will not have
                                                hibernaculum’s entrance or interior                                                                            assistance or (ii) a duty arising from
                                                                                                        a significant economic impact on a                     participation in a voluntary Federal
                                                environment if the alteration impairs an                substantial number of small entities.                  program.’’
                                                essential behavioral pattern, including                 Therefore, a final regulatory flexibility
                                                sheltering northern long-eared bats; or                                                                          (2) This final 4(d) rule will result in
                                                                                                        analysis is not required.                              less restrictive regulations under the
                                                (3) tree-removal activities result in the
                                                incidental take of northern long-eared                  Energy Supply, Distribution, or Use—                   Act, as it pertains to the northern long-
                                                bats when the activity either occurs                    Executive Order 13211                                  eared bat, than would otherwise exist
                                                within 0.25 mile (0.4 kilometer) of a                     Executive Order 13211 (Actions                       without a 4(d) rule or under the interim
                                                                                                        Concerning Regulations That                            4(d) rule. As a result, we do not believe
                                                known hibernaculum, or cuts or
                                                                                                        Significantly Affect Energy Supply,                    that this rule will significantly or
                                                destroys known, occupied maternity
                                                                                                        Distribution, or Use) requires agencies                uniquely affect small government
                                                roost trees or any other trees within a
                                                                                                        to prepare Statements of Energy Effects                entities. Therefore, a Small Government
                                                150-foot (45-meter) radius from the
                                                                                                        when undertaking certain actions. For                  Agency Plan is not required.
                                                maternity roost tree during the pup
                                                season (June 1 through July 31). This                   reasons discussed within this final rule,              Takings
                                                approach allows more flexibility to                     we believe that the rule will not have
                                                                                                        any effect on energy supplies,                            In accordance with Executive Order
                                                affected entities and individuals in                                                                           12630, this final rule will not have
                                                conducting activities within the WNS                    distribution, or use. Therefore, this
                                                                                                        action is not a significant energy action,             significant takings implications. We
                                                zone. Under this rule, we individually                                                                         have determined that the rule has no
                                                set forth prohibitions on possession and                and no Statement of Energy Effects is
                                                                                                        required.                                              potential takings of private property
                                                other acts with unlawfully taken                                                                               implications as defined by this
                                                northern long-eared bats, and on import                 Unfunded Mandates Reform Act                           Executive Order because this 4(d) rule
                                                and export of northern long-eared bats.                    In accordance with the Unfunded                     will result in less-restrictive regulations
                                                These prohibitions were included in the                 Mandates Reform Act (2 U.S.C. 1501 et                  under the Act than would otherwise
                                                interim 4(d) through the general                        seq.), we make the following findings:                 exist. A takings implication assessment
                                                application of the prohibitions of 50                      (1) This final rule will not produce a              is not required.
                                                CFR 17.31 to the northern long-eared                    Federal mandate. In general, a Federal
                                                bat. Under this rule, take of the northern                                                                     Federalism
                                                                                                        mandate is a provision in legislation,
                                                long-eared bat is also not prohibited for               statute, or regulation that would impose                 In accordance with Executive Order
                                                the following: Removal of hazardous                     an enforceable duty upon State, local, or              13132, this final 4(d) rule does not have
                                                trees for protection of human life and                  Tribal governments, or the private                     significant Federalism effects. A
                                                property; take in defense of life; and                  sector, and includes both ‘‘Federal                    federalism summary impact statement is
                                                take by an employee or agent of the                     intergovernmental mandates’’ and                       not required. This rule will not have
                                                Service, of the National Marine                         ‘‘Federal private sector mandates.’’                   substantial direct effects on the State, on
                                                Fisheries Service, or of a State                        These terms are defined in 2 U.S.C.                    the relationship between the Federal
                                                conservation agency that is operating a                 658(5)–(7). ‘‘Federal intergovernmental                Government and the State, or on the
                                                conservation program pursuant to the                    mandate’’ includes a regulation that                   distribution of power and
                                                terms of a cooperative agreement with                   ‘‘would impose an enforceable duty                     responsibilities among the various
                                                the Service. Regarding these three                      upon State, local, or [T]ribal                         levels of government.
                                                exceptions, take in defense of life was                 governments’’ with two exceptions. It
                                                                                                                                                               Civil Justice Reform
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                                                not included in the interim 4(d) rule,                  excludes ‘‘a condition of Federal
                                                but the other two exceptions were,                      assistance.’’ It also excludes ‘‘a duty                  In accordance with Executive Order
                                                either through the general application of               arising from participation in a voluntary              12988, the Office of the Solicitor has
                                                50 CFR 17.31 or through a specific                      Federal program,’’ unless the regulation               determined that this final rule does not
                                                exception included in the interim 4(d)                  ‘‘relates to a then-existing Federal                   unduly burden the judicial system and
                                                rule. Therefore, this final 4(d) rule will              program under which $500,000,000 or                    meets the requirements of sections 3(a)
                                                result in less restrictive regulations                  more is provided annually to State,                    and 3(b)(2) of the Order.


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                                                                  Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations                                           1921

                                                Paperwork Reduction Act of 1995 (44                     with Tribes to explain the listing                     white-nose syndrome (WNS), a disease
                                                U.S.C. 3501 et seq.)                                    process and discuss any concerns.                      affecting many U.S. bat populations.
                                                  This rule does not contain collections                Following publication of the proposed                  The term ‘‘WNS zone’’ identifies the set
                                                of information that require approval by                 rule, the Service established three                    of counties within the range of the
                                                the Office of Management and Budget                     interagency teams (biology of the                      northern long-eared bat within 150
                                                (OMB) under the Paperwork Reduction                     northern long-eared bat, non-WNS                       miles of the boundaries of U.S. counties
                                                Act. This rule will not impose                          threats, and conservation measures) to                 or Canadian districts where the fungus
                                                recordkeeping or reporting requirements                 ensure that States, Tribes, and other                  Pseudogymnoascus destructans (Pd) or
                                                on State or local governments,                          Federal agencies were able to provide                  WNS has been detected. For current
                                                individuals, businesses, or                             input into various aspects of the listing              information regarding the WNS zone,
                                                organizations. An agency may not                        rule and potential conservation                        contact your local Service ecological
                                                conduct or sponsor and a person is not                  measures for the species. Invitations for              services field office. Field office contact
                                                required to respond to a collection of                  inclusion in these teams were sent to                  information may be obtained from the
                                                information unless it displays a                        Tribes within the range of the northern                Service regional offices, the addresses of
                                                currently valid OMB control number.                     long-eared bat and a few tribal                        which are listed in 50 CFR 2.2.
                                                                                                        representatives participated on those                     (1) Prohibitions. The following
                                                National Environmental Policy Act (42                   teams. Two additional conference calls                 prohibitions apply to the northern long-
                                                U.S.C. 4321 et seq.)                                    (in January and March 2015) were held                  eared bat:
                                                  We have prepared a final                              with Tribes to outline the proposed                       (i) Purposeful take of northern long-
                                                environmental assessment, as defined                    species-specific 4(d) rule and to answer               eared bat, including capture, handling,
                                                under the authority of the National                     questions. Through this coordination,                  or other activities.
                                                Environmental Policy Act of 1969. For                   some Tribal representatives expressed                     (ii) Within the WNS zone:
                                                information on how to obtain a copy of                  concern about how listing the northern                    (A) Actions that result in the
                                                the final environmental assessment, see                 long-eared bat may impact forestry                     incidental take of northern long-eared
                                                ADDRESSES, above. The final                             practices, housing development                         bats in known hibernacula.
                                                environmental assessment will also be                   programs, and other activities on Tribal                  (B) Actions that result in the
                                                available on the Internet at http://                    lands.                                                 incidental take of northern long-eared
                                                www.regulations.gov and at http://www.                  References Cited                                       bats by altering a known hibernaculum’s
                                                fws.gov/midwest/Endangered.                                                                                    entrance or interior environment if it
                                                                                                          A complete list of references cited in               impairs an essential behavioral pattern,
                                                Government-to-Government                                this document is available on the                      including sheltering northern long-eared
                                                Relationship With Tribes                                Internet at http://www.regulations.gov                 bats.
                                                   In accordance with the President’s                   and upon request from the Twin Cities                     (C) Tree-removal activities that result
                                                memorandum of April 29, 1994                            Ecological Services Field Office (see FOR              in the incidental take of northern long-
                                                (Government-to-Government Relations                     FURTHER INFORMATION CONTACT).                          eared bats when the activity:
                                                with Native American Tribal                             Authors                                                   (1) Occurs within 0.25 mile (0.4
                                                Governments; 59 FR 22951), Executive                                                                           kilometer) of a known hibernaculum; or
                                                Order 13175 (Consultation and                             The primary authors of this document                    (2) Cuts or destroys known occupied
                                                Coordination With Indian Tribal                         are the staff members of the Midwest                   maternity roost trees, or any other trees
                                                Governments), and the Department of                     Region of the U.S. Fish and Wildlife                   within a 150-foot (45-meter) radius from
                                                the Interior’s manual at 512 DM 2, we                   Service.                                               the maternity roost tree, during the pup
                                                readily acknowledge our responsibility                  List of Subjects in 50 CFR Part 17                     season (June 1 through July 31).
                                                to communicate meaningfully with                                                                                  (iii) Possession and other acts with
                                                                                                          Endangered and threatened species,
                                                recognized Federal Tribes on a                                                                                 unlawfully taken northern long-eared
                                                                                                        Exports, Imports, Reporting and
                                                government-to-government basis. In                                                                             bats. It is unlawful to possess, sell,
                                                                                                        recordkeeping requirements,
                                                accordance with Secretarial Order 3206                                                                         deliver, carry, transport, or ship, by any
                                                                                                        Transportation.
                                                of June 5, 1997 (American Indian Tribal                                                                        means whatsoever, any northern long-
                                                Rights, Federal-Tribal Trust                            Regulation Promulgation                                eared bat that was taken in violation of
                                                Responsibilities, and the Endangered                      Accordingly, we amend part 17,                       this section or State laws.
                                                Species Act), we readily acknowledge                    subchapter B of chapter I, title 50 of the                (iv) Import and export.
                                                our responsibilities to work directly                   Code of Federal Regulations, as follows:                  (2) Exceptions from prohibitions. (i)
                                                with tribes in developing programs for                                                                         Any person may take a northern long-
                                                healthy ecosystems, to acknowledge that                 PART 17—ENDANGERED AND                                 eared bat in defense of his own life or
                                                tribal lands are not subject to the same                THREATENED WILDLIFE AND PLANTS                         the lives of others, including for public
                                                controls as Federal public lands, to                                                                           health monitoring purposes.
                                                remain sensitive to Indian culture, and                 ■ 1. The authority citation for part 17                   (ii) Any person may take a northern
                                                to make information available to tribes.                continues to read as follows:                          long-eared bat that results from the
                                                   In October 2013, Tribes and multi-                     Authority: 16 U.S.C. 1361–1407; 1531–                removal of hazardous trees for the
                                                tribal organizations were sent letters                  1544; and 4201–4245, unless otherwise                  protection of human life and property.
                                                inviting them to begin consultation and                 noted.                                                    (iii) Any person may take a northern
                                                coordination with the service on the                    ■ 2. Amend § 17.40 by revising                         long-eared bat by removing it from
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                                                proposal to list the northern long-eared                paragraph (o) to read as follows:                      human structures, but only if the actions
                                                bat. In August 2014, several Tribes and                                                                        comply with all applicable State
                                                multi-tribal organizations were sent an                 § 17.40    Special rules—mammals.                      regulations.
                                                additional letter regarding the Service’s               *     *     *     *    *                                  (iv) Purposeful take that results from
                                                intent to extend the deadline for making                  (o) Northern long-eared bat (Myotis                  actions relating to capture, handling,
                                                a final listing determination by 6                      septentrionalis). The provisions of this               and related activities for northern long-
                                                months. A conference call was also held                 rule are based upon the occurrence of                  eared bats by individuals permitted to


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                                                1922              Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations

                                                conduct these same activities for other                 the Service in accordance with section                   Dated: January 7, 2016.
                                                species of bat until May 3, 2016.                       6(c) of the Act, who is designated by his              Karen Hyun,
                                                  (v) All of the provisions of § 17.32                  agency for such purposes, may, when                    Acting Principal Deputy Assistant Secretary
                                                apply to the northern long-eared bat.                   acting in the course of his official                   for Fish and Wildlife and Parks.
                                                  (vi) Any employee or agent of the                     duties, take northern long-eared bats                  [FR Doc. 2016–00617 Filed 1–13–16; 8:45 am]
                                                Service, of the National Marine                         covered by an approved cooperative                     BILLING CODE 4333–15–P
                                                Fisheries Service, or of a State                        agreement to carry out conservation
                                                conservation agency that is operating a                 programs.
                                                conservation program pursuant to the
                                                terms of a cooperative agreement with                   *     *     *     *    *
mstockstill on DSK4VPTVN1PROD with RULES




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Document Created: 2016-01-14 02:50:53
Document Modified: 2016-01-14 02:50:53
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionRules and Regulations
ActionFinal rule.
DatesThis rule is effective February 16, 2016.
ContactPeter Fasbender, Field Supervisor, U.S. Fish and Wildlife Service, Twin Cities Ecological Services Field Office, 4101 American Blvd. East, Bloomington, MN 55425; telephone (612) 725-3548, ext. 2210; or facsimile (612) 725-3609. Persons who use a telecommunications device for the deaf (TDD) may call the Federal Information Relay Service (FIRS) at 800-877-8339.
FR Citation81 FR 1900 
RIN Number1018-AY98
CFR AssociatedEndangered and Threatened Species; Exports; Imports; Reporting and Recordkeeping Requirements and Transportation

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