Rhyticeros
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Papuan maple bird , male |
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| Scientific name | ||||||||||
| Rhyticeros | ||||||||||
| L. Reichenbach , 1849 |
Rhyticeros is a genus of hornbills (Bucerotidae), whose representatives are native to Southeast Asia. A German name is not established.
Like all hornbills, the species belonging to the genus Rhyticeros are cave-breeders. The female spends several weeks in a tree cavity, the entrance to which is walled up except for a narrow crack. The male feeds them through this narrow gap and later also the young birds.
Of the six species that are attributed to the species, four species are at risk than in their existence: helmet hornbill , Sundajahrvogel , Narcondamhornvogel and Sumbahornvogel .
features
They are medium-sized to large hornbills, their body length ranges from 45 centimeters ( Narcondam annual bird ) to 85 centimeters ( furrow hornbill ). The upper beaks in five of the species do not have a fully developed horn helmet, but only a raised bead at the base of the beak, which has a series of transverse furrows or tires. The bare skin on the throat and face is conspicuously colored. The plumage is different in the two sexes, the tail is white in four of the species. Only the humba hornbill has a black tail.
Like the rest of the hornbills, all species of the genus Rhyticeros are cave breeders.
Distribution area
The distribution area of the hornbills, which belong to the genus Rhyticeros , is Southeast Asia. Two of the species, namely the Narcondam annual bird and the Sumba hornbill, are typical endemics that occur on relatively small islands. Both species are considered endangered due to the habitat changes taking place on these islands. The Papuan hornbill, on the other hand, is represented on several islands in Indonesia and is not considered endangered. The range of the Sundajahrvogel is not exactly defined because of its similarity to the furrow hornbill . The earlier information that the species occurs in the far east of India and Sumatra are now considered incorrect. In contrast, a deposit is documented for the southeast of Myanmar, the west, southwest and extreme south of Thailand and the north of the Malay Peninsula. The stock situation of the Sunday year bird is classified as endangered, while the hornbill is not considered endangered.
species
The following species are included in the genus Rhyticeros :
- Hornbill ( Rhyticeros cassidix )
- Sumba hornbill ( Rhyticeros everetti )
- Narcondam hornbill ( Rhyticeros narcondami )
- Papuan hornbill ( Rhyticeros plicatus )
- Sundajahrvogel ( Rhyticeros subruficollis )
- Furchenhornvogel , Jahresvogel ( Rhyticeros undulatus )
Hornbill and man
Pet and hunting
At least from the first half of the 20th century it is reported that the indigenous peoples in its area of distribution kept the hornbill again and again as domestic animals. To do this, however, it has to be caught as a young bird. Adult birds that are kept can become very aggressive towards the owner. In the Indian state of Assam , hornbills were shot and sold as a medicinal product as late as the 1920s.
Dedication names
The specific epithet everetti of the sumbahorn bird honors Alfred Hart Everett (1848–1898), a British civil servant and administrative clerk in Borneo , who made a name for himself as an ornithologist , naturalist and zoological collector.
literature
- W. Grummt , H. Strehlow (Ed.): Zoo animal keeping birds. Verlag Harri Deutsch, Frankfurt am Main 2009, ISBN 978-3-8171-1636-2 .
- Alan Kemp: The Hornbills - Bucerotiformes. Oxford University Press, Oxford 1995, ISBN 0-19-857729-X .
Web links
Single receipts
- ↑ Kemp: The Hornbills - Bucerotiformes. P. 227.
- ↑ Kemp: The Hornbills - Bucerotiformes. P. 233.
- ↑ Rhyticeros everetti in the endangered Red List species the IUCN 2012. Posted by: BirdLife International, 2012. Accessed November 1, 2016th
- ↑ Rhyticeros plicatus in the endangered Red List species the IUCN 2012. Posted by: BirdLife International, 2012. Accessed October 30, 2016th
- ↑ a b c Rhyticeros subruficollis in the endangered Red List species the IUCN 2012. Posted by: BirdLife International, 2012. Accessed November 1, 2016th
- ↑ Rhyticeros undulatus in the endangered Red List species the IUCN 2012. Posted by: BirdLife International, 2012. Accessed November 1, 2016th
- ↑ Kemp: The Hornbills - Bucerotiformes. P. 235.
- ↑ Bo Beolens, Michael Watkins: Whose Bird? Men and Women Commemorated in the Common Names of Birds . Christopher Helm, London 2003, ISBN 0-7136-6647-1 , pp. 205 .