The black- and-white-casqued hornbill also known as the grey-cheeked hornbill, is a large approximately 70 cm long, black and white hornbill. It has an oversized blackish bill with a large casque on top. The female is slightly smaller than the male and has a significantly smaller casque.
The black-and-white-casqued hornbill is found in wooded habitats in central and western Africa. It is a monogamous species, and pairs nest in suitable tree cavities. The female usually lays up to two eggs. They feed mainly on figs, fruits, insects and small animals found in the trees.
It is recognizable by its black plummage for the higher body and wings alongside and white plummage on the lower body and wings with black feathers amongst the white feathers of the tail, particularly the top tail feathers and the base of the tail feathers.
It has a yellow-brownish bill and flattened casque, which are enlarged in males. Females have a smaller casque and a black bill. The purpose of the casque is unknown for males, although suggested to be for sexual characterization.
The black-and-white-casqued hornbill has very mobile eyes which is not a common trait in birds. This means that its eyes themselves can move in their socket, while other birds tend to have to move their heads to see. It is capable of displaying emotions through the feathers at the top of the head, which allows it to communicate its emotional state.
While males weight between 1 kg and 1.5 kg, the females weight between 1 kg and 1.25 kg.
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