Tennessee mammals

Northern Myotis in Tennessee

Myotis septentrionalis

Native to Tennessee S1 Critically Imperiled in Tennessee

Not listed as nonindigenous in Tennessee by USGS NAS; native to its Tennessee range.

IUCN Red List status

  1. LC
  2. NT
  3. VU
  4. EN
  5. CR
  6. EW
  7. EX

NT – Near Threatened

Close to qualifying as threatened in the near future.

Northern Myotis in Tennessee, by the numbers

Rare in Tennessee 75th most recorded of 86 mammals logged in Tennessee

31 occurrence records
3 with iNaturalist photos
Dec 28, 2014 Last seen in Tennessee

When to look for the Northern Myotis in Tennessee

Most sightings fall in June.

31 Tennessee occurrence records (iNaturalist and GBIF) by month of year. Shows when the species is recorded, not a guarantee of presence.

Monthly Tennessee records (table)
MonthRecords
January1
February2
March0
April0
May3
June8
July3
August2
September7
October2
November1
December2

Monthly northern myotis occurrence records (iNaturalist and GBIF) in Tennessee.

Seasonality

Year-round in Tennessee, with recorded sightings peaking in June, with a smaller rise in September.

Occurrence map

Where Northern Myotis has been recorded in Tennessee

31 records mapped · zoom and drag to explore

31 Tennessee records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Great Smoky Mountains National Park 4
North Cherokee National Forest & Wildlife Management Area 2
Shiloh National Military Park 1
Chuck Swan State Forest 1

Protected places with the most northern myotis sightings, from the USGS Protected Areas Database plus named mountain ranges, good spots to look, not a full breakdown, so they don't sum to the total.

Where it's recorded in Tennessee

CountyRecords
Perry County 6
Decatur County 4
Blount County 4
Anderson County 3
Johnson County 2
Hickman County 2
Rutherford County 2
Hardin County 1
Obion County 1
Rhea County 1
Union County 1
Campbell County 1
3 other counties 3

The complete county distribution, spread across 15 Tennessee counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

The northern myotis’s most recent confirmed Tennessee record dates to December 2014, more than a decade old on an otherwise open occurrence database. That gap says less about a shy bat and more about a disease that reshaped the eastern bat world in the years since.

Caves in winter, cluttered forest in summer

Great Smoky Mountains National Park, Fall Creek Falls State Park on the Cumberland Plateau, and the hardwood forest around Land Between the Lakes together span the two habitats this bat needs each year: cool limestone caves and mines for hibernation, and dense, cluttered forest canopy for summer hunting. Unlike open-air bats that chase insects in the open sky, the northern myotis gleans prey directly off leaves and bark within the forest itself, a hunting style that keeps it close to trees rather than out over fields or water.

A record frozen by white-nose syndrome

Records here run through 2014 and stop, right as white-nose syndrome was tearing through cave-hibernating bats across the eastern United States. A species already reduced by that disease elsewhere in its range is exactly the kind of animal whose Tennessee paper trail would go quiet without actually disappearing from the landscape; the absence of newer records may reflect a genuine, disease-driven decline rather than simply fewer people looking.

Status in Tennessee

NatureServe ranks the northern myotis S1, critically imperiled, in Tennessee, far below its global Near Threatened status, a gap that fits a species hit hardest in its eastern cave-wintering range. It’s native to the state, where any recovery depends on protecting the same caves and forest roost trees this bat has always needed.

Occurrence data from iNaturalist and GBIF.

More mammals in Tennessee in the atlas

Data & sources

The data and visualizations on this page draw on these open sources:

  • GBIFCC-BY 4.0occurrence records behind the range map, elevation, and record counts
  • iNaturalistCC0 / CC-BY / CC-BY-SAobservations, photos, and audio recordings
  • NatureServe ExplorerCC-BYthe state conservation rank
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status
  • Natural Earthpublic domainthe relief basemap
  • USFSpublic domainnational-forest boundaries
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"