Red-billed hornbill

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Red-billed hornbill
Tockus erythrorhynchus, Tarangire, crop.jpg
A northern red-billed hornbill (T. erythrorhynchus) at Tarangire NP
Call of T. erythrorhynchus
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Bucerotiformes
Family: Bucerotidae
Genus: Tockus
Species complex: Tockus erythrorhynchus complex
A. C. Kemp & W. Delport 2002 [1]
Species [1]

The red-billed hornbills are a group of hornbills found in the savannas and woodlands of sub-Saharan Africa. They are now usually split into five species, the northern red-billed hornbill (Tockus erythrorhynchus), western red-billed hornbill (T. kempi), Tanzanian red-billed hornbill (T. ruahae), southern red-billed hornbill (T. rufirostris) and Damara red-billed hornbill (T. damarensis), but some authorities consider the latter four all subspecies of Tockus erythrorhynchus. [2]

Contents

Description

Red Billed Hornbill Mating Display, crop.jpg
Breeding display at Buffalo Springs National Reserve, Kenya – Tockus rufirostris however, does not lift the wings in display. [3]
Tockus kempi at nest, Gambia.jpg
T. kempi at a nest in The Gambia

This group of conspicuous birds have mainly whitish underparts and head, grey upperparts, long tails, and a long curved red bill which lacks a casque. The sexes are similar, but the female has a smaller bill. They are generally large, at 42 centimetres (17 in) long, but the entire group is considered one of the smaller hornbills.

Behaviour

Breeding

During incubation, the female lays three to six white eggs in a tree hole that has been converted to a nest, which is blocked off with a plaster of mud, droppings and fruit pulp, with her inside, where she remains for a time after the eggs are hatched. The nest is built by both parents. Once the mother is inside the nest, there is only one narrow aperture, just big enough for the male to transfer food gathered from the outside habitat, to the mother and the chicks. When the chicks and the female are too big for the nest, the mother breaks out and rebuilds the wall, leaving the chicks inside for their continued protection from predators. Then both parents continued to feed the chicks.

Nesting

The female red-billed hornbill protects her young against intruders by building a wall across the opening of her nest. She then seals herself in and brings up her chicks in the enclosed space.

Feeding

They are omnivorous, taking and eating insects, fruit, seeds and even small rodents. [4] They feed mainly on the ground and will form flocks outside the breeding season.

Related Research Articles

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Hornbills are birds found in tropical and subtropical Africa, Asia and Melanesia of the family Bucerotidae. They are characterized by a long, down-curved bill which is frequently brightly coloured and sometimes has a horny casque on the upper mandible. Hornbills have a two-lobed kidney. They are the only birds in which the first and second neck vertebrae are fused together; this probably provides a more stable platform for carrying the bill. The family is omnivorous, feeding on fruit and small animals. They are monogamous breeders nesting in natural cavities in trees and sometimes cliffs. A number of mainly insular species of hornbill with small ranges are threatened with extinction, mainly in Southeast Asia.

<i>Tockus</i> Genus of birds

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<span class="mw-page-title-main">African grey hornbill</span> Species of bird

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<span class="mw-page-title-main">Congo pied hornbill</span> Species of bird

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<span class="mw-page-title-main">Monteiro's hornbill</span> Species of hornbill

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<span class="mw-page-title-main">Southern yellow-billed hornbill</span> Species of bird

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<span class="mw-page-title-main">Indian grey hornbill</span> Species of bird

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<span class="mw-page-title-main">Abyssinian ground hornbill</span> Species of bird

The Abyssinian ground hornbill or northern ground hornbill is an African bird, found north of the equator, and is one of two species of ground hornbill. It is the second largest species of African hornbill, only surpassed by the slightly larger southern ground hornbill.

<span class="mw-page-title-main">Meyer's parrot</span> Species of bird

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<span class="mw-page-title-main">Bucerotiformes</span> Order of birds

Bucerotiformes is an order of birds that contains the hornbills, ground hornbills, hoopoes and wood hoopoes. These birds were previously classified as members of Coraciiformes. The clade is distributed in Africa, Asia, Europe and Melanesia.

<span class="mw-page-title-main">Narcondam hornbill</span> Species of bird

The Narcondam hornbill is a species of hornbill in the family Bucerotidae. It is endemic to the Indian island of Narcondam in the Andamans. Males and females have a distinct plumage. The Narcondam hornbill has the smallest home range out of all the species of Asian hornbills.

<span class="mw-page-title-main">Eastern yellow-billed hornbill</span> Species of bird

The Eastern yellow-billed hornbill, also known as the northern yellow-billed hornbill, is a species of hornbill in the family Bucerotidae. It is found in Djibouti, Eritrea, Ethiopia, Kenya, Somalia, South Sudan, Tanzania, and Uganda. It resembles the southern yellow-billed hornbill, but has blackish skin around the eyes.

<span class="mw-page-title-main">Northern red-billed hornbill</span> Species of bird

The northern red-billed hornbill is a species of hornbill in the family Bucerotidae. It is found from southern Mauritania through Somalia and northeast Tanzania. There are five species of red-billed hornbills recognized, but all five were once considered conspecific and some authorities still classify the others as subspecies of Tockus erythrorhynchus.

<span class="mw-page-title-main">Western red-billed hornbill</span> Species of bird

The western red-billed hornbill is a species of hornbill in the family Bucerotidae. It is found from Senegal and Gambia to southern Mauritania and western Mali. There are five species of red-billed hornbills generally recognized now, but all five were once considered conspecific. Some authorities still categorize the group as Tockus erythrorhynchus with the remaining four as its subspecies

<span class="mw-page-title-main">Southern red-billed hornbill</span> Species of bird

The southern red-billed hornbill is a species of hornbill in the family Bucerotidae, which is native to the savannas and dryer bushlands of southern Africa. It is replaced by a near-relative, the Damara red-billed hornbill, in the arid woodlands of western Namibia. All five red-billed hornbills were formerly considered conspecific.

<span class="mw-page-title-main">Damara red-billed hornbill</span> Species of bird

The Damara red-billed hornbill is a species of hornbill in the family Bucerotidae. It is found in southwest Angola and northern Namibia. All five red-billed hornbills were formerly considered conspecific.

<span class="mw-page-title-main">Tanzanian red-billed hornbill</span> Species of bird

The Tanzanian red-billed hornbill is a species of hornbill in the family Bucerotidae. It is found in central Tanzania and was discovered by Robert Glen and Sue Stolberger in Ruaha National Park All five red-billed hornbills were formerly considered conspecific.

References

  1. 1 2 https://journals.co.za/doi/abs/10.10520/AJA00411752_24 [ bare URL ]
  2. "Red-billed Hornbill". www.hbw.com. Handbook of Birds of the World online. Retrieved 12 May 2018.
  3. Sinclair, Ian; Ryan, Peter (2010). Birds of Africa south of the Sahara (2nd ed.). Cape Town: Struik Nature. pp. 290–291. ISBN   9781770076235.
  4. "Twitch". 6 June 2021. Archived from the original on 6 June 2021. Retrieved 6 June 2021.