A member of the only order (Chiroptera) of mammals capable of powered flight, comprising about 1240 species in two groups, the megabats (fruit bats, flying foxes) and the microbats, which navigate and hunt mainly by echolocation. Bats fly by means of forelimbs that are greatly extended, with extremely long, webbed digits. Most microbats feed on insects, caught in flight, but some larger species feed on small vertebrates. Most megabats are larger than microbats, only the ten species in the genus Rousettus use echolocation, and most feed on fruits, pollen, or nectar. Microbats occur worldwide except in very high latitudes; megabats occur only in the Old World tropics and subtropics.