A fairly uncommon resident of the drier parts of Australia's interior, the black falcon (Falco subniger) is quite distinct from all other falcon species. Comparable in size to a peregrine but more slender, this raptor feeds mostly upon small birds which are captured on the wing. Unlike other large falcons, the black falcon habitually nests in trees, using the abandoned eyries of other raptors to raise the two to four young that are brooded each year.