New Jersey mammals

Eastern Red Bat in New Jersey

Lasiurus borealis

Native to New Jersey S3 Vulnerable in New Jersey

Not listed as nonindigenous in New Jersey by USGS NAS; native to its New Jersey 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 New Jersey, by the numbers

Common in New Jersey 22nd most recorded of 94 mammals logged in New Jersey

183 occurrence records
176 with iNaturalist photos
Jun 28, 2026 Last seen in New Jersey

Records from 2000–2026.

When to look for the Eastern Red Bat in New Jersey

Most sightings fall in March to April.

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

Monthly New Jersey records (table)
MonthRecords
January2
February6
March21
April32
May10
June4
July13
August21
September30
October22
November15
December7

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

Seasonality

Year-round in New Jersey, with recorded sightings peaking in March–April, with a smaller rise in August–October.

Occurrence map

Where Eastern Red Bat has been recorded in New Jersey

183 records mapped · zoom and drag to explore

158 New Jersey records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Belleplain State Forest 4
Cape May Point State Park 3
Island Beach State Park 3
Batsto Village 2
Wharton State Forest 2
Thundergut Pond Wildlife Management Area 1
Heislerville Wildlife Management Area 1
Liberty State Park 1

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 New Jersey

CountyRecords
Cape May County 25
Essex County 21
Ocean County 21
Atlantic County 13
Gloucester County 10
Mercer County 10
Camden County 8
Burlington County 8
Hudson County 7
Monmouth County 6
Middlesex County 6
Somerset County 5
8 other counties 43

The complete county distribution, spread across 20 New Jersey counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

New Jersey’s 183 eastern red bat records lean hard toward the coast, with Cape May, Ocean, and Atlantic counties at the front of the list and places like Island Beach State Park, Sandy Hook, and Cape May Point State Park marking the same shoreline corridor.

A dead leaf that flies away at dusk

Red bats roost alone, hanging by one foot among tree foliage with their rusty, frosted fur curled around them, and by day they pass convincingly for dead leaves. Even where the bat is common it is easy to overlook, since it neither gathers in colonies nor shelters in buildings. Inland records from Belleplain State Forest and the woods around Batsto Village show it hunting over forest openings and water as readily as along the shore.

A migrant moving through on the flyway

Eastern red bats are long-distance travelers, and New Jersey sits squarely on their coastal route. The state’s two reporting crests, March through April and again from August into October, match the spring and fall passages, when migrants move along the Atlantic shoreline and funnel through the same cape and barrier-island geography that concentrates migrating hawks and songbirds. Summer reports between the peaks belong to the bats that stay to raise their young in New Jersey’s trees.

Status in New Jersey

NatureServe ranks the eastern red bat S3, Vulnerable, in New Jersey, and G3 across its full range, an unusual combination of local and global concern. The species is native to the state, and USGS NAS does not list it as nonindigenous.

Occurrence data from iNaturalist and GBIF.

More mammals in New Jersey in the atlas

Data & sources

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