Andean Goose

Chloephaga melanoptera (Chloephaga melanoptera), a foreign language name Andean Goose, is a bird of the Angoose order.

Black-winged wild geese often live in nearby freshwater areas and coastal lagoons. They have strong terrestrial habitat, low swimming level, and raise their chest and hindquarters when entering the water. Sex alert and timid, people can not approach, often very far-sighted people fly or swim away. Nomadic foraging near water, mainly grasses, seeds and various aquatic plants.  

Black-winged geese breed from November to January, usually near the edges of lakes, rivers, ponds and swamps. Nests are built in rock crevices, or caves with sandy slopes. Male geese are very territorial. The female goose is lined with plants, and when she lays her eggs, she plucks a lot of her own feathers and places them in the nest. Each clutch lays 5-10 white eggs, which hatch for 30 days. The chicks become sexual early, can swim and do activities the next day after hatching, and are sexually mature at 2 years of age.

Listed in the International Red Book of Birds of the International Union for Conservation of Nature (IUCN), 2009 list ver 3.1.

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It is found in South America, including Colombia, Venezuela, Guyana, Suriname, Ecuador, Peru, Bolivia, Paraguay, Brazil, Chile, Argentina, Uruguay, and the Malvinas Islands (also known as the Falkland Islands).
It is found in alpine lakes, swamps, grasslands and wetlands, rocky or pebbly coastal areas above 3,000 m in central Peru, northernmost Chile to central Argentina, southern and western Bolivia and the Andes highlands. In the winter, due to the harsh climatic conditions, black-winged geese descend into the valleys and plains. The flight speed was slow and irregular.

The wild goose is 70-80 cm long and weighs 2700-3600g. Geese have small beaks relative to their large bodies, and they are similar in both sexes. The head and neck are white, the primary and secondary feathers and the tail are black and shiny. The shoulders have a black and white mottled appearance. Legs pink or orange. The irises are dark brown and the eyes are surrounded by thin pink rings.
Young geese have darker feathers than adults, and their heads and necks are grayish white. The black part of the feather is also not distinctive.