Big-eared Bat

Corynorhinus rafinesquii


• Mating: Polygamous

• Peak Breeding Activity: fall and winter

• Young are Born: May and June

• Feeding Periods: after dark

• Typical Foods: Insects, such as moths and flies


This species is easily identified by its exceptionally long ears and the two large fleshy lumps on the nose, bordering the nostrils. The fur of the big-eared bat is long and silky.

Habitat and Habits

The big-eared bat is very rare in Ohio, but can be found in Adams County. They roost in abandoned buildings and trees in the summer and winter, although they may also migrate south in the winter.

Reproduction and Care of the Young

Little is known about exactly when and where big-eared bats mate. Breeding is thought to occur in the fall and winter. Although sperm is transferred to the female during copulation, ovulation and fertilization of the egg are delayed until following spring. Females give birth to one pup in late May or early June. At four to six weeks, the pups are weaned and learn to fly.