Eastern Pipistrelle

Similar Species:
Myotises lack distantly tricolored hairs; most have longer, thinner tragus, and have 2 tiny premolars behind canine. Western Pipistrelle also lacks tricoloered fur.

Breeding:
Maternity colonies start forming late April-early May. Gestation about  44 days; 2 young born June-early July.

Habitat:
Primarily woodlands. Hibernates in caves, mines, or crevices. Summer colonies may be in buildings or hollow trees; there is a least one record in a cave.

Range:
Eastern U.S. from se Minnesota, Iowa, s. Kansas, Oklahoma, and Texas eastward.

Emerging early from its daytime hiding place in a building or hollow tree, the Easter Pipistrelle feeds on time insects, beetles, and flies. Maternity colonies are often found in buildings, but the great majority are probably in tree hollow. The number of bats in these colonies is very small, usually not more than 30 or  35 individuals. Each colony appears to use several alternate roosts, moving from one to the other during the season, even when young are present. In fall, pipistrelles migrate to a small mine or cave to hibernate. During hibernation they are often covered with water droplets, which sparkle and five the bats a whitish appearance.