Skip Navigation

Species Search:
FieldGuidesthreatened and/or endangered search resultsthreatened and/or endangered

previous  | next

Evening Bat Nycticeius humeralis


enlarge +

Evening Bat
credit: Legionarius

All Images


Get Our Newsletters


Advanced Search

Family: Vespertilionidae, Vespertilionid Bats view all from this family

Description Similar to the Big Brown Bat, but smaller, with reddish to dark brown fur above and somewhat paler below. The ears are blunt and rounded, with a tragus that is short and curves forward. Forearm 34-37mm. They forage over water at dusk and into the early evening. Common in buildings and other man-made structures.

Dimensions 83-96mm, 35-40mm, 9-14g

Warning Bats are susceptible to rabies, a serious viral disease that results in death if untreated. Rabid bats rarely attack humans or other animals, but bats found lying on the ground may be rabid. Never touch or pick up any bat. Stay away from any animal that seems to be acting strangely and report it to animal-control officers. If you are bitten by a possibly rabid animal, you must immediately consult a doctor for a series of injections; there is no cure once symptoms emerge.

Breeding Males remain in the southern part of the range, with only the females moving north to form maternity colonies of 30 to several hundred individuals and their young

Habitat Alpine & subalpine habitats, Forests & woodlands, Grasslands & prairies, Meadows & fields, Scrub, shrub & brushlands, Cities, suburbs & towns

Range Plains, Great Lakes, Mid-Atlantic, Southeast, Florida, Texas

Discussion One of the few bats that does not use caves, the Evening Bat apparently migrates southward to overwinter, rather than hibernating.