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| Geese
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A Canada Goose | ||||||||||||
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Anser Branta Chen Cereopsis † see also: Swan, Duck Anatidae |
This article deals with the true geese in the subfamily Anserinae. A number of other waterbirds, mainly related to the shelducks, have "goose" as part of their name.
True geese are medium to large birds, always (with the exception of the Néné) associated to a greater or lesser extent with water. Most species in Europe, Asia and North America are strongly migratory as wild birds, breeding in the far north and wintering much further south. However, escapes and introductions have led to resident feral populations of several species.
Geese have been domesticated for centuries. In the West, farmyard geese are descended from the Greylag, but in Asia the Swan GooseSwan Goose : Animalia : Chordata : Aves : Anseriformes : Anatidae : Anser cygnoides Binomial name Anser cygnoides Linnaeus, 1758) The Swan Goose Anser cygnoides is a large goose breeding in Mongolia and eastern Russia. It is migratory and winters mainly i has been farmed for at least as long.
All geese eat an exclusively vegetarian diet, and some can become pests when flocks feed on arable crops.
Geese tend to lay a smaller number of eggs than ducks. However, both parents protect the nest and young, which usually results in a higher survival rate for the young geese, known as goslings.
The following are the true goose species.
Genus Anser, Grey Geese
Genus Anser or Chen (depending on authority cited)
Genus Branta, Black Geese
Genus Cereopsis