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Blue-winged Goose (Cyanochen cyanopterus) - Wiki
Subject: Blue-winged Goose (Cyanochen cyanopterus) - Wiki
Blue-winged Goose (Cyanochen cyanopterus)1.jpg
Resolution: 500x700 File Size: 162154 Bytes Date: 2004:03:29 14:57:42 Camera: C750UZ (OLYMPUS CORPORATION) F number: f/3.2 Exposure: 10/5000 sec Focal Length: 175/10 Upload Date: 2008:01:08 15:15:16

Blue-winged Goose (Cyanochen cyanopterus) - Wiki


Blue-winged Goose
From Wikipedia, the free encyclopedia

Order: Anseriformes
Family: Anatidae

[Photo] Blue-winged Goose (Cyanochen cyanopterus) at Slimbridge Wildfowl and Wetlands Centre, Slimbridge, Gloucestershire, England. Date: 29 March 2004. Author: Adrian Pingstone (http://commons.wikimedia.org/wiki/User:Arpingstone) released to the public domain.

The Blue-winged Goose (Cyanochen cyanopterus) is a large goose, which is endemic to Ethiopia. It is the only member of the genus Cyanochen. Placement of this species in the waterfowl phylogeny is unresolved; while it is morphologically closest to shelducks, mtDNA sequence analyses of the cytochrome b and NADH dehydrogenase subunit 2 genes (Johnson & Sorenson, 1999) indicates that it might belong to a very distinct and ancient "duck" clade, perhaps together with Hartlaub's Duck. Interestingly, the wing color pattern (which is the best morphological indicator of evolutionary relationships in waterfowl) is nearly identical in these two species, and very different from any other anatid (Madge & Burn, 1987).

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. 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.

The Blue-winged Goose is a stocky 60-75 cm grey-brown bird with a slightly paler head and upper neck. It has a small black bill and black legs. In flight, this species shows a pale blue forewing. Sexes are similar, but immature birds are duller.

This is a quiet species, but both sexes may give a soft whistle. It feeds by grazing, and is apparently largely nocturnal, loafing during the day. 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. It is threatened by habitat loss.

http://en.wikipedia.org/wiki/Blue-winged_Goose
The text in this page is based on the copyrighted Wikipedia article shown in above URL. It is used under the GNU Free Documentation License. You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.

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