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African Grey Hornbill

From Opus

Male, subspecies nasutusPhoto © by obasanmiGambia, June 2007
Male, subspecies nasutus
Photo © by obasanmi
Gambia, June 2007
Lophoceros nasutus

Contents

[edit] Identification

45–51 cm (17¾-20 in)

  • Grey body, head, flight feathers and long tail are darker
  • White line down each side of the head and one on the back (visible only in flight)
  • Long curved bill (black in male, female has red mandibles)
  • Small casque and a creamy horizontal stripe.

Immature birds are more uniformly grey.

[edit] Distribution

Female, subspecies nasutusPhoto © by ReiniThe Gambia
Female, subspecies nasutus
Photo © by Reini
The Gambia

Africa and the Arabian Peninsula
Western Africa: Mauritania, Senegambia, Senegal, The Gambia, Guinea-Bissau, Guinea, Mali, Sierra Leone, Liberia, Ivory Coast, Burkina Faso, Ghana, Togo, Benin, Nigeria, Niger, Chad, Cameroon, Central African Republic, Equatorial Guinea, Gabon, Congo, Angola
Eastern Africa: Sudan, Eritrea, Ethiopia, Somalia, Kenya, Uganda, Rwanda, Burundi, Tanzania, Zambia, Mozambique, Malawi
Southern Africa: Namibia, Botswana, Zimbabwe, South Africa, KwaZulu-Natal, Swaziland
Middle East: Arabian Peninsula, Saudi Arabia, Yemen

[edit] Taxonomy

Formerly placed in the genus Tockus.

[edit] Subspecies

Lophoceros nasutus has 2 subspecies[1]

[edit] Habitat

Sub-adult, subspecies epirhinusPhoto © by max1Satara, Kruger National Park, South Africa, September 2018
Sub-adult, subspecies epirhinus
Photo © by max1
Satara, Kruger National Park, South Africa, September 2018

Riverine bush, deciduous woodland, open savanna, edges of sub-desert and grassland .

[edit] Behaviour

[edit] Diet

Their main diet consists of insects, especially arboreal grasshoppers, beetles, mantids and scale insects. They also eat larger prey, such as tree-frogs, chameleons and lizards.

[edit] Breeding

Their clutch contains 2-4 white eggs which are laid in a tree hollow; this 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 young and the female are too big to fit in the nest, the mother breaks out and rebuilds the wall, then both adults feed the young.

[edit] Vocalisation

Photo © by charelliCaprivi, Namibia, May 2018
Photo © by charelli
Caprivi, Namibia, May 2018

Generally unobtrusive, they are inclined to call at sunrise, emitting a series of shrill piping whistles which varies in speed but often rises to a crescendo with the bird's head is thrown back the whole body trembling with the effort.

[edit] References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2018. The eBird/Clements checklist of birds of the world: v2018. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Avibase
  3. Handbook of the Birds of the World Alive (retrieved December 2018)

[edit] External Links


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