Arkansas mammals

Big Brown Bat in Arkansas

Eptesicus fuscus

Native to Arkansas S4 Apparently Secure in Arkansas

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

IUCN Red List status

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

LC – Least Concern

Widespread and abundant; not at risk.

Big Brown Bat in Arkansas, by the numbers

Occasional in Arkansas 32nd most recorded of 78 mammals logged in Arkansas

134 occurrence records
56 with iNaturalist photos
Feb 21, 2026 Last seen in Arkansas

Records from 2000–2026.

134 total records count every Arkansas occurrence from GBIF and iNaturalist; the monthly chart covers the 130 records with a full observation date.

When to look for the Big Brown Bat in Arkansas

Most sightings fall in July.

130 Arkansas occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Arkansas records (table)
MonthRecords
January5
February2
March8
April3
May7
June12
July33
August18
September10
October18
November12
December2

Monthly big brown bat occurrence records (iNaturalist and GBIF) in Arkansas, 2000–2026.

Seasonality

Year-round in Arkansas, with recorded sightings peaking in July.

Occurrence map

Where Big Brown Bat has been recorded in Arkansas

134 records mapped · zoom and drag to explore

134 Arkansas records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Sylamore Wildlife Management Area 14
Winona Wildlife Management Area 2
Ozark National Forest 2
Ouachita National Forest 1
Buffalo National River 1
Sweden Creek Falls Natural Area 1

Protected places with the most big brown bat 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 Arkansas

CountyRecords
Stone County 17
Clark County 17
Faulkner County 12
Baxter County 10
Pulaski County 8
Benton County 7
Independence County 7
Washington County 6
Madison County 5
Polk County 4
Cleburne County 4
Montgomery County 4
22 other counties 33

The complete county distribution, spread across 34 Arkansas counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Big brown bats carry a NatureServe S4 apparently secure rank in Arkansas, and the record leans toward GBIF (114 of 134 records), suggesting survey data documents this building-roosting bat more thoroughly than casual sightings alone. Ouachita National Forest’s 3 logged sightings mark the state’s top named site.

July alone accounts for 33 of the 134 records, close to a quarter of the entire year’s total, tracking the maternity-colony season, while records fall to just 2 in both February and December, consistent with reduced winter activity as the species enters periods of torpor.

Occurrence data from iNaturalist and GBIF.

More mammals in Arkansas 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"