birdandhike.com logo
Home | Wildlife | Mammals
Townsend's Big-eared Bat (Corynorhinus townsendii)
Mammals Around Las Vegas, Wildlife Around Las Vegas
Townsend's Big-eared Bat (Corynorhinus townsendii)
Note very long ear

Townsend's Big-eared Bats (Corynorhinus townsendii) are fairly large, brown bats. The head and body are about 4-inches long, and the wingspan is about 12 inches. When seen, these bats can be recognized by their enormous, 1-inch long ears.

Taxonomy: Order: Chiroptera, Family: Vespertilionidae

Townsend's Big-eared Bat (Corynorhinus townsendii)

Female Townsend's Big-eared Bats form maternity colonies during summer. Maternity colonies consist of one or more small clusters of bats of up to about 100 bats per cluster. Photos below show typical maternity colony behavior (two clusters of bats). In these colonies, the females come together to roost during the day and care for their young. This species is considered sensitive in Nevada, and it is important to stay away from maternal colonies and not disturb them. I saw these bats while exiting a cave, and fortunately, the did not fly off as we climbed out. If we had scared them off, some of the pups may have died.

Males are solitary during the maternity periods.

Townsend's Big-eared Bat (Corynorhinus townsendii)
Townsend's Big-eared Bat maternity colony
Townsend's Big-eared Bat (Corynorhinus townsendii)
Townsend's Big-eared Bat maternity colony
Townsend's Big-eared Bat (Corynorhinus townsendii) Townsend's Big-eared Bat (Corynorhinus townsendii)
Townsend's Big-eared Bat (Corynorhinus townsendii) Townsend's Big-eared Bat (Corynorhinus townsendii)
Townsend's Big-eared Bat (Corynorhinus townsendii) Townsend's Big-eared Bat (Corynorhinus townsendii)
Townsend's Big-eared Bat (Corynorhinus townsendii) Townsend's Big-eared Bat (Corynorhinus townsendii)
Townsend's Big-eared Bat (Corynorhinus townsendii) more to come ...

Note: All distances, elevations, and other facts are approximate.
copyright; Last updated 120920

Mammals Around Las Vegas Wildlife Around Las Vegas Glossary Copyright, Conditions, Disclaimer Home

 

Google Ads