Ganso Aliazul

Identificación

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. 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.<p>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.

Taxonomía

Nombre científico

Cyanochen cyanoptera

Autoridad

(Rüppell, 1845)

Orden

Anseriformes

Familia

Anátidos

Género

Cyanochen

Distribución y hábitat

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.

Migración

Vertical migration

Comportamiento

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.<p>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.

Conservación

Tendencia poblacional

declining