Length: 66-76 cm. Plumage: adult with head, throat, back, wings, tail and undertail coverts black, breast and belly white. Yellow line above eye not meeting on forehead, but ending in long, pale yellow plumes behind each eye. Immature with a line of cream feathers above eye and replacing plumes behind eye. Bare parts: iris red; bill pink to orange-red; feet dull pink with darker webs and black soles.