Beak

Facial structure found in birds and various other animal clades

The beak or bill is an external rostrum structure found mostly in birds. A beak is used for pecking, grasping, and holding (in probing for food, eating, manipulating and carrying objects, killing prey, or fighting), preening, courtship, and feeding young. The terms beak and rostrum are also used to refer to a similar organ in some non-avian theropods, ornithischians, pterosaurs, cetaceans, dicynodonts, rhynchosaurs, anuran tadpoles, turtles, monotremes (i.e.

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