Tine beaks
| Tine beaks | ||||||||
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Aztec bearded bird ( Semnornis frantzii ), female |
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| Systematics | ||||||||
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| Scientific name of the family | ||||||||
| Semnornithidae | ||||||||
| Prum , 1988 | ||||||||
| Scientific name of the genus | ||||||||
| Semnornis | ||||||||
| Richmond , 1900 |
The tine beaks ( Semnornis ) are the only genus of the family of toucan bearded birds (Semnornithidae). Only two species are counted in the genus. Both are more closely related to the toucans than to the American bearded birds . They are therefore placed in a family of their own.
Appearance
Tine beaks are relatively large bearded birds and reach a body length of 18 to 22 centimeters. The toucan bearded bird is larger and, with an average weight of 96 grams, also almost 30 grams heavier than the Aztec bearded bird . Both species have powerful beaks. The sexual dimorphism is significantly less pronounced compared to the American bearded birds . In both species, the only difference between the female and the male is the lack of a few elongated neck feathers that can be raised to form a small black feather hood. The Aztec bearded bird is generally olive-green with a dull orange-brown chest. The toucan bearded bird, on the other hand, is much more colorful and is characterized by a black upper head, a light gray throat, a bright red chest and a strong golden-orange rump and flanks.
distribution
Both species of prickly beak are Neotropic birds . The Aztec bearded bird is found only in humid forests of the highlands of Costa Rica and Panama . The bearded toucan lives in a similar habitat in the western mountain forests of Ecuador and Colombia . Both species colonize secondary forest as well as primary forest and occur on the edges of forests . They are both resident birds. After they have fledged, the young birds also do not move far from their place of hatch.
Way of life
Both species of pronged beaks are gregarious birds outside of breeding season, foraging for food in small flocks of up to five or six individuals. They are diurnal birds. The Aztec bearded bird rests outside the breeding season at night together with other individuals of its kind in a nesting cavity. Up to 19 Aztec bearded birds sleeping together have already been counted.
The diet of both species consists mainly of fruits and insects during the breeding season. Fruits are eaten whole or held with one foot and then worked with the beak. They occasionally chew berries slowly and only swallow the juice. The skin is spat out again. Tine beaks also occasionally eat flowers.
species
The following two species are included in the genus of the prickly beaks and the toucan bearded family:
- Aztec Bearded Bird , also "Aztec Knackbärtling" or "Zinkenschnabel" ( Semnornis frantzii )
- Toucan bearded bird ( Semnornis ramphastinus )
supporting documents
literature
- Lester L. Short and Jennifer FM Horne: Toucans, Barbets and Honeyguides - Ramphastidae, Capitonidae and Indicatoridae . Oxford University Press, Oxford 2001, ISBN 0-19-854666-1 .
Individual evidence
- ↑ WorldBirdNames.org ( Memento of May 13, 2007 in the Internet Archive )
- ↑ birdstack Genera in the family Semnornithidae (Prong-billed and Toucan Barbets) ( Memento of the original from January 2, 2011 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Short et al., P. 321
- ↑ Short et al., P. 318
- ↑ Short et al., Color plate 15
- ↑ J. Horne, L. Short: Family Capitonidae (Barbets) . In: Josep del Hoyo, Andrew Elliott, Jordi Sargatal (eds.): Handbook of the Birds of the World . Volume 7, Jacamars to Woodpeckers . Lynx Edicions, Barcelona 2002, ISBN 978-84-87334-37-5 , pp. 218-219.
- ^ A b Alexander Skutch: The Life-History of the Prong-Billed Barbet . In: Auk . 61, No. 1, 1944, pp. 61-88.
- ↑ JV Remsen, Jr., Hyde, Mary Ann and Angela Chapman: The Diets of Neotropical Trogons, Motmots, Barbets and Toucans . In: The Condor . 95, No. 1, 1993, pp. 178-192. doi : 10.2307 / 1369399 .
