A huge, distinctive hornbill with a large yellow bill and casque. Black face, wings, and breast contrast with white neck, belly, and tail. Sexes are similar, except that females have an entirely yellow casque, a pale iris, and bare pink skin around the eye. In flight, note the white tail with black band, and the black wings with a yellowish-white band and a white edge. The species inhabits dense evergreen forests. The call is usually a loud series of deep grunts.