African pied hornbills have black and white feathers and a long curved black and yellow bill. These birds are primarily black but the belly and tip of the tail are white. The beak has a medium-sized casque, which is the protuberance on the top. Males and females look similar, but the female has a smaller casque. Immature pied hornbills have duller coloration, a smaller beak, and lack a casque.