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Scientific name : Anser anser
Family : Anatidae
L de 75 à 90cm - E de 147 à 182cm
The Greylag Goose is a species of bird belonging to the family Anatidae, this elegant waterfowl is the ancestor of most breeds of domestic geese. Wild varieties have plumage gray-beige, and darker brown on the neck, flanks, upper wings and the top of the tail. These veins are brown feathers of the same gray-beige as the underside of the bird. The sides are shaded with brown. The rump is white, like the back of the abdomen and under tail. The leading edge of the wings is bordered by a pale blue-gray line. The legs are pink flesh, strong and webbed. The black eye is surrounded by white.
In the spring they frequent the marshes, the edges of lakes to riparian vegetation important. In winter, the mild coastal research and sheltered areas. We find therefore rather on the edge of artificial reservoirs, lakes and estuaries but also in the rolling grasslands and fields Talut.
The Greylag Goose is a vegetarian exclusive, it feeds mostly by grazing grass and shoots, but it can also dig up the rhizomes, roots and tubers, gather seeds, and fruits. Wild, it eats mostly aquatic plants, reeds such as bulrushes, cattails and phragmites, or prairie plants such as grasses, clover and dandelions.
Courtship and mating take place in the water, The nest is built on the ground, hidden in vegetation and reeds. The female builds the nest, the male supervisor in the territory. The nest is composed of woody stems or reeds and padded down to the bottom. In April, the female lays 4 to 9 eggs whose incubation period is 27-29 days. The chicks are precocial and leave the nest when they are dry. They are then able to follow their parents, to swim and feed themselves.
Wild populations are protected under the Agreement on the Conservation of Migratory Waterbirds Waterbirds (AEWA).