6 OF THE WORLD'S MOST DANGERGOUS BIRDS

Cassowaries are the only members of the family Casuariidae and belong to the order Casuariiformes, which also includes the emu.

Ostriches are flightless birds found only in open country in Africa.

The common emu, the only survivor of several forms exterminated by settlers, is stout-bodied and long-legged like its relative the cassowary.

Barred owls, whose habitat includes much of the eastern United States and southeastern Canada, are smaller than great horned owls.

Owls of all kinds have been known to attack people when defending their young, their mates, or their territories.

Lammergeiers, which are also called bearded vultures, are big eaglelike vultures of the Old World.