Cocos Booby Sula brewsteri

Large seabird of inshore and offshore waters in tropical regions of the eastern Pacific Ocean. Mostly brown, with a sharp white belly. The head and neck color vary geographically, and can be solidly brown or variably whitish. Immatures have a variably mottled brown belly that rarely looks solidly brown. Compare with other boobies. Often seen from beaches, sometimes just beyond the breakers. Usually plunge-dives from a shallow angle, much closer to the water than Blue-footed Booby. Breeds in colonies on offshore islands, nesting on the ground.