Copyright photo by Merlin D. Tuttle, Bat Conservation International, www.batcon.org

Eptesicus fuscus

Wingspan: 13–15 in.

Length: 4–5 in.

Weight: 0.46–0.53 oz

Color: Light rust to dark chocolate brown; the individual hairs are darker at the bases than at the tips.

Other: The tail is completely enclosed in the tail membrane.

Roosting behavior: Females form maternity colonies; males live in bachelor roosts. Will occupy bat houses.