The individual silky hairs are basally dark, medially yellowish, and distally black with white tips. The belly of the bat is not heavily frosted. The throat has a distinct yellow patch. The hair on the elbow, at the base of the clawed thumb, and the upper arm is yellowish as well. The ears are yellow with black edges.
Brownish fur extends out on the underside of the wing nearly to the wrist.
The bat has large, strong teeth, with the first premolar located at the inner junction of the large canine. The bat approaches the insect from behind, taking the abdomen and thorax in its mouth and biting off and swallowing this area of the insect, while dropping the wings and head. In comparison to other bats, the hoary bat feeds on relatively few orders of insects. Reproduction In North America, the hoary bat's breeding range extends across Canada and northcentral and northeastern United States down to at least Kansas and Kentucky, and perhaps to Arkansas, Louisiana, and Georgia. Hoary bats are thought to mate around the time of autumn migration.