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Cave Biology Data Portal
Subterranean biodiversity of North America and around the globe
AnimaliaChordataMammaliaChiropteraVespertilionidaeEptesicus

Big Brown Bat
Eptesicus fuscus (Palisot de Beauvois, 1796)

Taxonomy

Kingdom Animalia
Phylum Chordata
Class Mammalia
Order Chiroptera
Family Vespertilionidae
Genus Eptesicus
Species Eptesicus fuscus (Palisot de Beauvois, 1796)

Description

Diagnostic characters

Ecological class
Trogloxene
Realm
Terrestrial

Distribution

Range

Known from 49 counties across 10 states.

Continent

North America

Country

United States

States and provinces

Alabama, Arkansas, Georgia, Illinois, Indiana, Kentucky, Oklahoma, Pennsylvania, Tennessee, Virginia

Counties

Alabama
Jackson, Lauderdale, Madison
Arkansas
Baxter, Benton, Franklin, Independence, Izard, Madison, Marion, Newton, Randolph, Searcy, Sharp, Stone, Washington
Georgia
Floyd, Polk, Walker
Illinois
Jackson, Union
Indiana
Monroe
Kentucky
Carter, Clark, Edmonson, Jackson, Madison, Meade, Pulaski, Rockcastle, Warren
Oklahoma
Adair, Delaware
Pennsylvania
Bucks, Fayette, Mifflin, Somerset
Tennessee
Bedford, Blount, Campbell, Carter, Cheatham, Claiborne, Cumberland, Montgomery, Sullivan, Union, Van Buren
Virginia
Lee

Conservation and management

IUCN Red List

LC Least Concern

EXEWCRENVUNTLC▲

Assessed in 2016.

NatureServe

G5 Secure

G1G2G3G4G5▲

National ranks

United States
N5 Secure
Canada
N5 Secure

Subnational ranks

Kansas
S5 Secure
West Virginia
S5 Secure
Navajo Nation
S5 Secure
Indiana
S4 Apparently Secure
Rhode Island
S5 Secure
Connecticut
S5 Secure
South Carolina
S4 Apparently Secure
Pennsylvania
S4 Apparently Secure
Washington
S4 Apparently Secure
Utah
S4 Apparently Secure
Delaware
S5 Secure
Mississippi
S5B Secure (breeding), S5N Secure (non-breeding)
Vermont
S4 Apparently Secure
New York
S5 Secure
Idaho
S3 Vulnerable
Missouri
S4 Apparently Secure
California
SNR Unranked
Kentucky
S5 Secure
Oklahoma
SNR Unranked
Iowa
S4 Apparently Secure
Michigan
S5 Secure
North Carolina
S5 Secure
Illinois
S5 Secure
New Hampshire
S3 Vulnerable
District of Columbia
S4 Apparently Secure
Arizona
S4 Apparently Secure
Maine
S4 Apparently Secure
Nebraska
S5 Secure
Arkansas
S4 Apparently Secure
Massachusetts
S4 Apparently Secure
Virginia
S5 Secure
Maryland
S4 Apparently Secure
Georgia
S5 Secure
Minnesota
S3 Vulnerable
Nevada
S3 Vulnerable
Wisconsin
S4 Apparently Secure
Montana
S4 Apparently Secure
Louisiana
S3 Vulnerable
North Dakota
SNR Unranked
Florida
S3 Vulnerable
Colorado
S5 Secure
Ohio
SNR Unranked
Wyoming
S5 Secure
Tennessee
S5 Secure
New Jersey
S3 Vulnerable
Oregon
S4 Apparently Secure
New Mexico
S5 Secure
South Dakota
S5 Secure
Alabama
S5 Secure
Texas
S5 Secure
Northwest Territories
SU Unrankable
New Brunswick
S3 Vulnerable
Ontario
S4 Apparently Secure
British Columbia
S5 Secure
Alberta
S4 Apparently Secure
Manitoba
S4B Apparently Secure (breeding)
Quebec
S3 Vulnerable
Saskatchewan
S5 Secure

State and federal status

Not listed under the U.S. Endangered Species Act

References

  • Bailey, V. 1933. Cave Life of Kentucky. US Department of Agriculture, Bureau of Biological Survey, Washington, DC, USA. 256 pp.
  • Banta, A.M. 1907. The fauna of Mayfield's Cave. Carnegie Institution of Washington Publication 67: 1–114. https://www.biodiversitylibrary.org/item/60987.
  • Brennan, J.M. & White, J.S. 1960. New records and description of chiggers (Acarina, Trombiculidae) on bats in Alabama. Journal of Parasitology 46: 346–350.
  • Cassidy, J.J., O'Hagan, G.G., Sanders, J.S. & Harvey, M.J. 1979. Swarming of bats at two southern Ozark caves. Proceedings of the Tennessee Academy of Science 54: 73.
  • Collins, J. & Sanders, C. 2016. A summary of bat-friendly gates and applications in Pennsylvania. In: Butchkoski, C.M., Reeder, D.M., Turner, G.G. & Whidden, H.P. (eds), Conservation and Ecology of Pennsylvania's Bats, pp. 201–208. The Pennsylvania Academy of Science, East Stroudsburg, Pennsylvania, USA.
  • Fenolio, D.B. 2014. 2014 Ozark aquatic subterranean wildlife surveys. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 21 pp.
  • Fenolio, D.B., Niemiller, M.L., Slay, M.E. & Carter, E.T. 2017. Biological inventories of caves in the Ozarks of northeastern Oklahoma: December 2017 field report. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 17 pp.
  • Fenolio, D.B., Niemiller, M.L., Slay, M.E. & Carter, E.T. 2018. Biological inventories of caves in the Ozarks of northeastern Oklahoma: December 2018 field report. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 25 pp.
  • Godwin, J.C. 2008. Biological inventory of the cave and karst systems of The Nature Conservancy's Sharp-Bingham Mountain Preserve. Alabama Natural Heritage Program, Auburn, Alabama, USA. 40 pp.
  • Harker, D.F., Jr. & Barr, T.C., Jr. 1979. Caves and associated fauna of Eastern Kentucky, Volume 3. Kentucky Nature Preserves Commission, Frankfurt, Kentucky, USA. 130 pp.
  • Heath, D.R., Saugey, D.A. & Heidt, G.A. 1986. Abandoned mine fauna of the Ouachita Mountains, Arkansas: vertebrate taxa. Journal of the Arkansas Academy of Science 40: 33–36.
  • Hobbs, III., H.H. 1994. Assessment of the ecological resources of the caves of Russell Cave National Monument, Jackson County, Alabama and of selected caves at the Lookout Mountain Unit of Chickamauga-Chattanooga National Military Park, Dade County, Georgia and Hamilton County, Tennessee. 200 pp.
  • Johnson, J.S., Scafini, M.R., Sewall, B.J. & Turner, G.G. 2016. Hibernating bat species in Pennsylvania use colder winter habitats following the arrival of white-nose syndrome. In: Butchkoski, C.M., Reeder, D.M., Turner, G.G. & Whidden, H.P. (eds), Conservation and Ecology of Pennsylvania's Bats, pp. 181–199. The Pennsylvania Academy of Science, East Stroudsburg, Pennsylvania, USA.
  • Lamb, J. & Wyckoff, G. 2010. White-nose syndrome monitoring and response report for Tennessee. Tennessee Bat Working Group. 24 pp.
  • Lewis, J.J. 2004. Interstate 66 karst faunal study. Environmental Impact Statement. 17 pp.
  • Lewis, J.J. 2005. A biological inventory of caves of the Cumberland Plateau. Tennessee Chapter Cave Program, The Nature Conservancy, Nashville, Tennessee, USA. 156 pp.
  • Lewis, J.J. & Lewis, S.L. 2005. Inventory of the subterranean fauna of Tims Ford State Park, Franklin County, Tennessee. Tennesee Natural Heritage Program, Nashville, Tennessee, USA. 28 pp.
  • Lewis, J.J. & Lewis, S.L. 2007. A biological reconnaissance of selected caves in the Highland Rim area of central Tennessee. Tennessee Chapter Cave Program, The Nature Conservancy, Nashville, Tennessee, USA. 42 pp.
  • Linzey, D.W. 1995. Mammals of Great Smoky Mountains National Park - 1995 update. Journal of the Elisha Mitchell Scientific Society 111: 1–81.
  • Linzey, D.W. 2016. Mammals of Great Smoky Mountains National Park: 2016 revision. Southeastern Naturalist 15, Monograph 8: 1–93.
  • McDaniel, V.R. & Gardner, J.E. 1977. Cave fauna of Arkansas: vertebrate taxa. Journal of the Arkansas Academy of Science 31: 68–71. https://scholarworks.uark.edu/jaas/vol31/iss1/22.
  • McGregor, S.W., Rheams, K.F., O'Neil, P.E., Moser, P.H. & Blackwood, R. 1994. Biological, geological, and hydrological investigations in Bobcat, Matthews, and Shelta caves and other selected caves in north Alabama. Geological Survey of Alabama, Tuscaloosa, Alabama, USA. 226 pp.
  • McGregor, S.W., O'Neil, P.E., Rheams, K.F., Moser, P.H. & Blackwood, R. 1997. Biological, geological, and hydrological investigations in Bobcat, Matthews, and Shelta caves and other selected caves in north Alabama. Geological Survey of Alabama Bulletin 166: 1–198.
  • McLaren, S.B. & Wible, J.R. 2016. Pennsylvania bats preserved as museum specimens: a storehouse of information. In: Butchkoski, C.M., Reeder, D.M., Turner, G.G. & Whidden, H.P. (eds), Conservation and Ecology of Pennsylvania's Bats, pp. 63–74. The Pennsylvania Academy of Science, East Stroudsburg, Pennsylvania, USA.
  • Trumbore, L.E., Reynolds, R.J., Thomas, S.C., Orndorff, W., Cramphorn, B., Gladstone, N.S., Harden, C.W., Lewis, J.J., Milne, M.A., Ober, K.A., Shear, W.A., Stephen, C.D.R. & Zigler, K.S. 2024. Cave biodiversity of Cumberland Gap National Historical Park. Journal of Cave and Karst Studies 86: 13–24. doi:10.4311/2022LSC0116
  • Wallace, R.L. 1984. Biological survey report of Great Smoky Mountains National Park caves. Great Smoky Mountains National Park, U.S. National Park Service, Gatlinburg, Tennessee, USA. 33 pp.
  • Wallace, R.L. 1990. Biological survey report of the Great Smoky Mountains National Park caves. Great Smoky Mountains National Park, U.S. National Park Service, Gatlinburg, Tennessee, USA. 34 pp.
  • Webb, D.W., Taylor, S.J. & Krejca, J.K. 1993. The biological resources of Illinois caves and other subterranean environments. Illinois Natural History Survey, Champaign, Illinois, USA. 143 pp.
  • Zigler, K.S., Niemiller, M.L., Stephen, C.D.R., Ayala, B.N., Milne, M.A., Gladstone, N.S., Engel, A.S., Jensen, J.B., Camp, C.D., Ozier, J.C. & Cressler, A. 2020. Biodiversity from caves and other subterranean habitats of Georgia, USA. Journal of Cave and Karst Studies 82: 125–167. doi:10.4311/2019LSC0125

How to cite this account

Eptesicus fuscus (Palisot de Beauvois, 1796). Cave Biology Data Portal, account SP-2432. https://cavebiology.org/species/eptesicus-fuscus/ (accessed 7 September 2026).

Data sources and funding are listed in the Acknowledgments.

Spotted something wrong on this page? Report a correction. Accounts are compiled from many sources and corrections from people who know the group are the most useful email we get.

Cave Biology Data Portal

Species accounts, distributions, and conservation status for the subterranean fauna of North America and around the globe, with resources for the cave and karst research community.

Text and data CC BY 4.0. Images all rights reserved unless stated.

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