Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Subsectio: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauria
Ordo: Saurischia
Cladus: Theropoda
Cladus: Neotheropoda
Infraclassis: Aves
Cladus: Euavialae
Cladus: Avebrevicauda
Cladus: Pygostylia
Cladus: Ornithothoraces
Cladus: Euornithes
Cladus: Ornithuromorpha
Cladus: Ornithurae
Cladus: Carinatae
Parvclassis: Neornithes
Cohors: Neognathae
Cladus: Galloanseres
Ordo: Anseriformes
Familia: Anatidae
Subfamilia: Tadorninae
Genus: Cyanochen
Species: Cyanochen cyanoptera
Name
Cyanochen cyanoptera (Rüppell, 1845)
Synonyms
Bernicla cyanoptera (protonym)
Cyanochen cyanopterus (orth. err.)
Vernacular names
čeština: Husice modrokřídlá
Deutsch: Blauflügelgans
English: Blue-winged Goose
español: Ganso aliazul
français: Ouette à ailes bleues
日本語: アオバコバシガン
русский: Голубокрылый гусь
The blue-winged goose (Cyanochen cyanoptera) is a waterfowl species which is endemic to Ethiopia. It is the only member of the genus Cyanochen.
Relations
wild in Ethiopia
At Baltimore Zoo having a drink of water
At Sylvan Heights Waterfowl Park
The relations of this species among the waterfowl is unresolved. It is morphologically close to shelducks, and particularly the South American sheldgeese, which have highly similar courtship displays.[2] However, mitochondrial DNA sequence analyses of the cytochrome b and NADH dehydrogenase subunit 2 genes indicates that it might belong to a very distinct and ancient "duck" clade, together with Hartlaub's duck, another African species of uncertain affinities.[3] The wing color pattern, a good morphological indicator of evolutionary relationships in waterfowl, is similar in these two species, and very different from any other waterfowl.[3][4]
Description
This is a stocky grey-brown bird about 70 centimetres (28 in) long with a slightly paler head and upper neck. It has a small black bill and black legs. A chunky mid-sized goose. Standing bird looks fairly dull, gray and dirty white, sometimes showing blue along the edge of the wing.[5]In flight, this species shows a pale blue forewing. Sexes are similar, but immature birds are duller. The plumage of these birds is thick and loose, furlike as an adaptation to the cold of the Ethiopian highlands.[2]
Voice
The blue-winged goose is a quiet species, but both sexes may give a soft whistle; it does not honk or cackle like the true geese.
Habitat
The habitats of the blue-winged goose are primarily rivers, freshwater lakes, swamps, freshwater marshes, water storage areas, and subtropical or tropical high-altitude shrubland or grassland.
Behaviour
It feeds by grazing, and is apparently largely nocturnal, loafing during the day. It can swim and fly well, but this terrestrial bird is reluctant to do either, and is quite approachable. It forms flocks outside the breeding season.
It breeds by mountain lakes and streams. This little-known species is believed to build a lined nest amongst grass tussocks, and to lay 6–7 eggs.
Status
It is threatened by habitat loss, trapping for food and possibly drought. Formerly classified as a Near Threatened species on the IUCN Red List, new research has shown it to be rarer than it was believed. Consequently, it is uplisted to Vulnerable status in 2008.[1][6]
References
BirdLife International (2016). "Cyanochen cyanoptera". IUCN Red List of Threatened Species. 2016: e.T22679961A92836351. doi:10.2305/IUCN.UK.2016-3.RLTS.T22679961A92836351.en. Retrieved 12 November 2021.
Kingdon, J. (1989). Island Africa: The Evolution of Africa's Rare Plants and Animals. Princeton: Princeton University Press. ISBN 0-691-08560-9.
Johnson, Kevin P.; Sorenson, Michael D. (1999). "Phylogeny and biogeography of dabbling ducks (genus Anas): a comparison of molecular and morphological evidence" (PDF). Auk. 116 (3): 792–805. doi:10.2307/4089339. JSTOR 4089339. Retrieved 1 January 2009.
Madge, Steve; Burn, Hilary (1987). Wildfowl: an Identification Guide to the Ducks, Geese and Swans of the World. London: Christopher Helm. ISBN 0-7470-2201-1.
"Blue-winged Goose - eBird". ebird.org. Retrieved 2 September 2021.
BirdLife International (2008). "2008 IUCN Redlist status changes" (Excel Spreadsheet). Retrieved 23 May 2008.Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Subsectio: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauria
Ordo: Saurischia
Cladus: Theropoda
Cladus: Neotheropoda
Infraclassis: Aves
Ordo: Passeriformes
Subordo: Passeri
Infraordo: Passerida
Superfamilia: Muscicapoidea
Familia: Bombycillidae
Genus: Dulus
Species: Dulus dominicus
Name
Dulus Vieillot, 1816
References
Vieillot, L.J.P. 1816. Analyse d'une nouvelle ornithologie élémentaire. 70 pp. Paris: Deterville. P.42 BHL Reference page.
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