Bats live in many different habitats, including: caves, abandoned mines, cliffs, rock crevices, wood piles, under loose tree bark, in dead tree hollows, under bridges, and in barns, attics, and other human structures.In winter when insects become scarce, bats either migrate south to warmer climates or hibernate. They may sleep in winter roosts, or "hibernacula", for up to six months, living off the fat they have built up in the summer.
Females generally give birth to a single pup sometime between mid May to mid July. Born hairless and helpless, the babies mature quickly. Their ears and eyes open within hours and they learn to fly in three to six weeks.
