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'''Gengerenin'''<ref name=fr-bambara>Bailleul, Charles. 2008. ''Dictionnaire français-bambara''. Bamako: Éditions Donniya. ISBN 2-911741-04-8.</ref> |
'''Gengerenin'''<ref name="fr-bambara">Bailleul, Charles. 2008. ''Dictionnaire français-bambara''. Bamako: Éditions Donniya. ISBN 2-911741-04-8.</ref> |
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{{short description|Species of bird}} {{Speciesbox|name=Gabar goshawk|image=Gabar Goshawk (Micronisus gabar).jpg|image_caption=Adult in Tanzania|status=LC|status_system=IUCN3.1|status_ref=<ref name="iucn status 11 November 2021">{{cite iucn |author=BirdLife International |date=2016 |title=''Micronisus gabar'' |volume=2016 |page=e.T22695445A93509960 |doi=10.2305/IUCN.UK.2016-3.RLTS.T22695445A93509960.en |access-date=11 November 2021}}</ref>|genus=Micronisus|parent_authority=[[George Robert Gray|G.R. Gray]], 1840|species=gabar|authority=([[Francois-Marie Daudin|Daudin]], 1800)|subdivision_ranks=Subspecies|subdivision_ref=<ref>Gill F, D Donsker & P Rasmussen (Eds). 2020. IOC World Bird List (v10.2). doi : 10.14344/IOC.ML.10.2.</ref>|subdivision=* ''M. g. niger'' - (Vieillot, 1823) |
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* ''M. g. aequatorius'' - Clancey, 1987 |
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* ''M. g. gabar'' - (Daudin, 1800)|synonyms=*''Melierax gabar'' <small>Daudin, 1800</small>}} |
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The '''gabar goshawk''' ('''''Micronisus gabar''''') is a small species of African and Arabian [[bird of prey]] in the family [[Accipitridae]]. |
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== Description == |
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The gabar goshawk is [[Polymorphism (biology)|polymorphic]] and occurs in two distinct forms which fluctuate in relative abundance across the geographic range of the species. The more frequent, paler form has mostly grey upperparts with a conspicuous, white rump and white and grey barring on the chest, thighs and underwings, and a dark grey, barred tail. In contrast, the less frequent form, which accounts on average for approximately 25 percent of the overall population, is almost completely black. In both forms of adult the eyes are dark, and the legs are long and the [[ cere]] is red. The cere and the legs are yellow in immatures and the plumage is generally browner, with the pale birds having untidier barring on the chest than the adult. The females are significantly larger than the males, the male's weigh 90 - 173g and the females 167 - 240g<ref name="Arkive">{{cite web|url=http://www.arkive.org/gabar-goshawk/melierax-gabar/|title=Gabar goshawk (''Melierax gabar'')|access-date=23 October 2016|publisher=Wildscreen|archive-url=https://web.archive.org/web/20161024032405/http://www.arkive.org/gabar-goshawk/melierax-gabar/|archive-date=2016-10-24|url-status=dead}}</ref> The body length is 28–36 cm and the wingspan 63 cm.<ref name="oiseaux">{{cite web|url=http://www.oiseaux-birds.com/card-gabar-goshawk.html|title=Gabar Goshawk Melierax gabar|access-date=23 October 2016|publisher=Oiseaux-birds}}</ref> |
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== Distribution and subspecies == |
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The gabar goshawk is found in sub-Saharan Africa, extending to Arabian Peninsula.<ref name="oiseaux" /> These [[subspecies]] are currently recognised:<ref name="Avibase">{{cite web|url=http://avibase.bsc-eoc.org/species.jsp?avibaseid=922DE9C1DF8597F0|title=Gabar Goshawk ''Micronisus gabar'' (Daudin, 1800)|access-date=23 October 2016|publisher=Denis Lepage|work=Avibase}}</ref> |
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* ''M. g. aequatorius'': highlands of Ethiopia to the [[Democratic Republic of the Congo]], Zambia, and northern Mozambique |
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* ''M. g. gabar'': southern [[Angola]] to [[Zambia]], [[Mozambique]], and [[South Africa]] |
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* ''M. g. niger'': [[Senegambia]] to [[Sudan]], northern Ethiopia and southwestern Arabia |
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== Habitat == |
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The gabar goshawk occurs in open woodland, especially dry ''[[Acacia]]'' savanna and broad-leaved woodland, with [[miombo]] (''[[Brachystegia]]''), cluster-leaf ''[[Terminalia (plant)|Terminalia]]'', and [[mopane]] (''Colosphermum mopane''). In the more arid regions of southern Africa such as the [[Karoo]] and [[Namib Desert]], it is generally restricted to tree-lined watercourses, but it may also move into cities and towns.<ref name="Iziko">{{cite web|url=http://www.biodiversityexplorer.org/birds/accipitridae/melierax_gabar.htm|title=''Melierax gabar'' (Gabar goshawk)|access-date=23 October 2016|publisher=Iziko Museums of South Africa|archive-date=17 February 2017|archive-url=https://web.archive.org/web/20170217042836/http://www.biodiversityexplorer.org/birds/accipitridae/melierax_gabar.htm|url-status=dead}}</ref> |
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== Biology == |
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The gabar goshawk is usually considered to be sedentary, but immature birds are somewhat nomadic and some small migratory movements have been recorded in parts of its range. It is most frequently observed alone, but pairs are also common, particularly during the breeding season, when the male is often observed pursuing the female through trees, or calling from his perch. The small platform nest is typically constructed using thin twigs and positioned in a vertical fork in the crown of a thorny tree, such as an acacia. One notable aspect of their nest construction is that the birds collect spider webs including the live [[Spider|spiders]], the spiders spin new webs which may help camouflage the nest, and the spiders may consume arthropods that would parasitize the chicks.<ref name="Arkive" /> |
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The eggs are laid from July to December, peaking in September to November. The normal clutch is two eggs, but up to four may be laid, and these are mainly incubated by the female for about 33–38 days. Once hatched, the chicks are brooded by the female for the first 19–21 days of their lives, while the male brings her food to feed to them. They leave the nest around 35–36 days old, becoming fully independent about one month later.<ref name="Iziko" /> |
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Small birds are the major part of the gabar goshawk's diet, with small mammals, reptiles, and insects also taken on occasion. The prey is typically flushed from trees and caught following a persistent and energetic pursuit. The gabar goshawk sometimes hunts from the perch, swooping down to catch prey off the ground or in flight. They have also been recorded attacking the nests of colonial birds such as [[Ploceidae|weavers]] by clawing their way destructively through the nest top to snatch the chicks from the nest.<ref name="Arkive" /> |
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Known predators of the gabar goshawk include [[Tawny eagle|tawny eagles]], [[Wahlberg's eagle|Wahlberg's eagles]], and [[Ayres's hawk-eagle|Ayres's hawk-eagles]].<ref name="Iziko" /> |
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== References == |
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{{Reflist}} |
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== External links == |
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{{Commonscat|Micronisus gabar}}{{Wikispecies|Melierax gabar}} |
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* Gabar Goshawk - [http://sabap2.adu.org.za/docs/sabap1/161.pdf Species text in The Atlas of Southern African Birds] |
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{{Accipitrimorphae|A.|state=collapsed}} {{Taxonbar|from=Q390328}} |
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== Sababou == |
== Sababou == |
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Version du 27 Marisikalo 2024 à 03:02
| Nom court | M. gabar  |
|---|---|
| Nom scientifique du taxon | Micronisus gabar |
| Rang taxonomique | espèce |
| Taxon supérieur | Micronisus |
| Protonyme | Falco gabar |
| Statut de conservation UICN | espèce de préoccupation mineure |
| Annexe CITES | annexe II de la CITES |
Gengerenin[1]
Modèle:Short description Modèle:Speciesbox
The gabar goshawk (Micronisus gabar) is a small species of African and Arabian bird of prey in the family Accipitridae.
Description
The gabar goshawk is polymorphic and occurs in two distinct forms which fluctuate in relative abundance across the geographic range of the species. The more frequent, paler form has mostly grey upperparts with a conspicuous, white rump and white and grey barring on the chest, thighs and underwings, and a dark grey, barred tail. In contrast, the less frequent form, which accounts on average for approximately 25 percent of the overall population, is almost completely black. In both forms of adult the eyes are dark, and the legs are long and the cere is red. The cere and the legs are yellow in immatures and the plumage is generally browner, with the pale birds having untidier barring on the chest than the adult. The females are significantly larger than the males, the male's weigh 90 - 173g and the females 167 - 240g[2] The body length is 28–36 cm and the wingspan 63 cm.[3]
Distribution and subspecies
The gabar goshawk is found in sub-Saharan Africa, extending to Arabian Peninsula.[3] These subspecies are currently recognised:[4]
- M. g. aequatorius: highlands of Ethiopia to the Democratic Republic of the Congo, Zambia, and northern Mozambique
- M. g. gabar: southern Angola to Zambia, Mozambique, and South Africa
- M. g. niger: Senegambia to Sudan, northern Ethiopia and southwestern Arabia
Habitat
The gabar goshawk occurs in open woodland, especially dry Acacia savanna and broad-leaved woodland, with miombo (Brachystegia), cluster-leaf Terminalia, and mopane (Colosphermum mopane). In the more arid regions of southern Africa such as the Karoo and Namib Desert, it is generally restricted to tree-lined watercourses, but it may also move into cities and towns.[5]
Biology
The gabar goshawk is usually considered to be sedentary, but immature birds are somewhat nomadic and some small migratory movements have been recorded in parts of its range. It is most frequently observed alone, but pairs are also common, particularly during the breeding season, when the male is often observed pursuing the female through trees, or calling from his perch. The small platform nest is typically constructed using thin twigs and positioned in a vertical fork in the crown of a thorny tree, such as an acacia. One notable aspect of their nest construction is that the birds collect spider webs including the live spiders, the spiders spin new webs which may help camouflage the nest, and the spiders may consume arthropods that would parasitize the chicks.[2]
The eggs are laid from July to December, peaking in September to November. The normal clutch is two eggs, but up to four may be laid, and these are mainly incubated by the female for about 33–38 days. Once hatched, the chicks are brooded by the female for the first 19–21 days of their lives, while the male brings her food to feed to them. They leave the nest around 35–36 days old, becoming fully independent about one month later.[5]
Small birds are the major part of the gabar goshawk's diet, with small mammals, reptiles, and insects also taken on occasion. The prey is typically flushed from trees and caught following a persistent and energetic pursuit. The gabar goshawk sometimes hunts from the perch, swooping down to catch prey off the ground or in flight. They have also been recorded attacking the nests of colonial birds such as weavers by clawing their way destructively through the nest top to snatch the chicks from the nest.[2]
Known predators of the gabar goshawk include tawny eagles, Wahlberg's eagles, and Ayres's hawk-eagles.[5]
References
- ↑ Bailleul, Charles. 2008. Dictionnaire français-bambara. Bamako: Éditions Donniya. ISBN 2-911741-04-8.
- ↑ 2,0 2,1 et 2,2 "Gabar goshawk (Melierax gabar)". Wildscreen. Archived from the original on 2016-10-24. Retrieved 23 October 2016.
- ↑ 3,0 et 3,1 "Gabar Goshawk Melierax gabar". Oiseaux-birds. Retrieved 23 October 2016.
- ↑ "Gabar Goshawk Micronisus gabar (Daudin, 1800)". Avibase. Denis Lepage. Retrieved 23 October 2016.
- ↑ 5,0 5,1 et 5,2 "Melierax gabar (Gabar goshawk)". Iziko Museums of South Africa. Archived from the original on 17 February 2017. Retrieved 23 October 2016.
External links
- Gabar Goshawk - Species text in The Atlas of Southern African Birds
Modèle:Accipitrimorphae Modèle:Taxonbar