More than 490 bird species live in Kaziranga which includes 24 globally threatened species. The park is known for its nesting colonies of Spot-billed Pelicans and Adjutants. Waterfowl which breed in or pass through Kaziranga include several rare species of geese (lesser white-fronted goose), and ducks (ferruginous pochard, Baer's pochard). Other rare riverine birds include kingfishers, herons, shanks, and terns. Raptors include the rare eastern imperial eagle, other eagles, and the lesser kestrel.