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In general, owls have very keen hearing, eyesight that is extremely sensitive to any movement in dim light, eyes situated in the front of the head, soft feathers that allow for "silent" flight, which is an aid in hunting, facial discs, and heads that can rotate 2700, that is three quarters of a circle. Owls eat small birds, rodents, and, rarely, dead animals, called carrion. They bolt their food down, ejecting the indigestible parts in the form of pellets. There seems to be no regularity in their breeding seasons. They typically lay two to seven eggs in hollow trees, in other birds' nests, or in human structures. As is true with most of the Falconiformes, the female owls are usually larger than the males.