African Grey Hornbill
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 African Grey Hornbill, Parc Forestier de Hann, Senegal
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| Tockus nasutus (Linnaeus, 1766) |
The African Grey Hornbill, Tockus nasutus, is a hornbill. Hornbills are a family of tropical near-passerine birds found in the Old World.
The African Grey Hornbill is a widespread and common resident breeder in much of sub-Saharan Africa and into Arabia.
This is a bird mainly of open woodland and savannah. The female lays two to four white eggs in a tree hole, which is blocked off during incubation with a cement made of mud, droppings and fruit pulp. There is only one narrow aperture, just big enough for the male to transfer food to the mother and the chicks.
When the chicks and the female are too big to fit in the nest, the mother breaks out and rebuilds the wall, then both parents feed the chicks.
This species is a large bird, at 45cm in length, but is one of the smaller hornbills. It has mainly grey plumage, with the head, flight feathers and long tail being a darker shade. There is a white line down each side of the head and one on the back which is visible only in flight. The long curved bill is black and has a small casque and a creamy horizontal stripe.
Sexes are similar, but the male has a black bill, whereas the female has red on the mandibles. Immature birds are more uniformly grey. The flight is undulating. The similarly sized Red-billed Hornbill has uniformly grey plumage.
The African Grey Hornbill is omnivorous, taking insects, fruit and reptiles. It feeds mainly in trees.
This conspicuous bird advertises its presence with its piping pee-o pee-o pee-o call.
[edit] References
- BirdLife International (2004). Tockus nasutus. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 11 May 2006. Database entry includes justification for why this species is of least concern
- Birds of The Gambia by Barlow, Wacher and Disley, ISBN 1-873403-32-1
