Very large terrestrial species. Males are mostly black with a curly crest and a white belly and vent. Note the yellow knob on a black-tipped bill. Females are barred black and white above and have a buffy belly and vent, a black bill with some yellow at the base of the lower bill. Usually found in humid forests and gallery forests foraging singly or in pairs; can be very tame. Commonest call is a high-pitched whistled “kseuw.”