The grey-headed fish eagle is a large stocky raptor at about 75 cm in length. Adults have dark brown wings and back, a grey head and reddish brown breast. The lower belly, thighs and tail are white, the latter having a black terminal band. Sexes are similar, but young birds have a pale buff head, underparts and underwing, all with darker streaking.
The grey-headed fish eagle breeds in the forests of the Indian subcontinent east to Southeast Asia. It builds a stick nest in a tree near water and lays two to four eggs. It is a specialist fish eater which hunts over lakes, lagoons, and large rivers.