Immature White-bellied Sea Eagle, Northern Territory, Australia.The White-bellied Sea Eagle is a large bird of prey in the family Accipitridae which also includes many other diurnal raptors such as kites, buzzards and harriers.It is resident from India through southeast Asia to Australia on coasts and major waterways. This large eagle is very distinctive. The adult has white head, breast underwing coverts and tail. The upperparts are grey and the black underwing flight feathers contrast with the white coverts. The tail is short and wedge-shaped as in all Haliaeetus species.