Indiana mammals

Eastern Red Bat in Indiana

Lasiurus borealis

Native to Indiana S3 Vulnerable in Indiana

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

Eastern Red Bat in Indiana, by the numbers

Common in Indiana 23rd most recorded of 74 mammals logged in Indiana

78 occurrence records
77 with iNaturalist photos

Records from 2000–2026.

78 total records count every Indiana occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 71; the monthly chart covers the 71 records with a full observation date.

When to look for the Eastern Red Bat in Indiana

Most sightings fall in April.

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

Monthly Indiana records (table)
MonthRecords
January0
February1
March8
April16
May4
June8
July12
August7
September7
October7
November0
December1

Monthly eastern red bat occurrence records (iNaturalist and GBIF) in Indiana, 2000–2026.

Seasonality

Year-round in Indiana, with recorded sightings peaking in April, with a smaller rise in July.

Occurrence map

Where Eastern Red Bat has been recorded in Indiana

71 records mapped · zoom and drag to explore

70 Indiana records mapped

Where it's recorded in Indiana

CountyRecords
Monroe County 8
Marion County 6
Brown County 4
Boone County 3
Hamilton County 3
Johnson County 2
Madison County 2
Harrison County 2
Lake County 2
Porter County 2
Hendricks County 2
Allen County 2
24 other counties 40

The complete county distribution, spread across 36 Indiana counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Eastern red bats roost in foliage and migrate through Indiana, linking deciduous woods with feeding areas along forest edges at places such as Indiana Dunes, Kankakee Sands, and Pokagon. Records rise in March–April and June–July, consistent with seasonal movement and summer activity, though visible encounters remain unusual.

The 73 iNaturalist records are documented detections, not a measure of abundance. Grounded or roosting bats are far more likely to be photographed than bats feeding overhead, and most acoustic surveys are not represented, so Indiana’s record map is necessarily incomplete.

Occurrence data from iNaturalist and GBIF.

Eastern Red Bat in other states

More mammals in Indiana 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