|Berenicornis comatus. Male|
The White-crowned Hornbill (Berenicornis comatus), also known as the White-crested Hornbill or Long-crested Hornbill (leading to easy confusion with the African Tropicranus albocristatus), is a species of hornbill.
This bird inhabits rainforests of low and medium altitudes, usually at an elevation below 900 meters. It may also be found into fruit, oil-palm and rubber plantations. It is threatened by habitat loss.
Berenicornis comatus is a large hornbill, reaching a length of 83–102 centimetres (33–40 in) and a weight of 1.3–1.5 kilograms (2.9–3.3 lb). Females are smaller than males. The plumage is black and white. The head, neck, breast and tail are white, while the rest of the feathers is black. It has a white crown feathers erected in a crest (hence the common name). Between the eye and the bill and on the throat there is bare dark blue skin. The bill is mainly black, with a yellowish base. Similarly to most of hornbills it has a kind of blackish casque on the top if its bill. Female have black neck and underparts. These birds are territorial and feed on various fruits, lizard, artopods and larvae. 
Female lays two white eggs in a tree hole. Then the female seals herself obstructing the entrance to its nest with droppings, debris and mud. The male and other adults and young belonging to a cooperative group feed the breeding female and later the chicks through a narrow hole. Female leaves the nest breaking the "wall" when the chicks are able to fly. 
- BirdLife International (2008). Aceros comatus. In: IUCN 2008. IUCN Red List of Threatened Species. Retrieved 21 February 2009.
- Clements, J. F. 2007. The Clements Checklist of Birds of the World, 6th Edition. Cornell University Press. Downloadable from Cornell Lab of Ornithology
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