District of Columbia mammals

Eastern Red Bat in DC

Lasiurus borealis

Native to District of Columbia S4 Apparently Secure in District of Columbia

Not listed as nonindigenous in District of Columbia by USGS NAS; native to its District of Columbia 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 District of Columbia, by the numbers

Common in District of Columbia 14th most recorded of 51 mammals logged in District of Columbia

36 occurrence records
32 with iNaturalist photos
Jun 30, 2026 Last seen in District of Columbia

Records from 2000–2026.

36 total records count every District of Columbia occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 35; the monthly chart covers the 35 records with a full observation date.

When to look for the Eastern Red Bat in District of Columbia

Most sightings fall in September.

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

Monthly District of Columbia records (table)
MonthRecords
January4
February0
March4
April6
May5
June3
July1
August1
September7
October2
November2
December0

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

Seasonality

Year-round in District of Columbia, with recorded sightings peaking in September, with a smaller rise in April–May.

Occurrence map

Where Eastern Red Bat has been recorded in District of Columbia

35 records mapped · zoom and drag to explore

34 District of Columbia records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Rock Creek Park 7
National Capital Parks 3

Protected places with the most eastern red 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 District of Columbia

CountyRecords
District of Columbia County 34
Other localities 2

The complete county distribution, spread across 1 District of Columbia counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Eastern red bat reports in DC scatter across leafy, tree-lined spots: Rock Creek Park, the wetland forest at Kenilworth Park and Aquatic Gardens, the collections at the U.S. National Arboretum, and the wooded shoreline of Theodore Roosevelt Island. That spread fits a bat that roosts in foliage rather than in caves or buildings.

Instead of hibernating underground like many bats, the eastern red bat wraps itself in a tree’s leaves during the day, its reddish fur making it look like a curled dead leaf hanging from a branch. Each fall it migrates south much like a bird would, rather than sleeping through winter close to home, which likely thins out DC’s records once temperatures drop.

Only 36 records have been logged across the whole city, so this is a genuinely thin dataset spread over four separate sites rather than a real map of where the bat actually lives. A tree-lined block with zero reports may simply be a block nobody’s looked at closely after dark.

Occurrence data from iNaturalist and GBIF.

More mammals in District of Columbia in the atlas

Data & sources

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