The rufous hornbill (Buceros hydrocorax) is a large bird known for its distinctive appearance. It has a predominantly black body with rufous (reddish-brown) feathers on its head, neck and upper breast. The bird’s most striking feature is its large, curved bill and casque (a hollow structure on top of the bill), which are bright red in colour. The bill is long and slightly down-curved, and the casque is more pronounced in males.