The Swan Goose species has been domesticated. Introduced and feral populations of its domestic breeds occur in many places outside its natural range. The wild form is also kept in collections, and escapes are not unusual among feral flocks of other Anserand Branta geese.Though the majority of domestic geese are descended from the greylag goose (A. anser), two breeds are direct descendants of the swan goose: the Chinese goose and the African goose. These breeds have been domesticated since at least the mid-18th century perhaps even (in China) since around 1000 BC. They vary considerably from their wild parent in appearance, temperament, and ability to produce meat and eggs; the most conspicuous feature is the prominent bill knob.
Appearance: – The Swan Goose is a fairly large goose with a long swan-like black beak, the cap which extends below the eye and the back of neck are chestnut brown, while the bottom half of the face and also front and sides of the neck are pale buff, a narrow white band around the base of the beak, upper-parts and flanks are grey-brown with whitish edges to the feathers, under-parts are a paler brown, and under-tail coverts are white. Legs and feet are orange. Both sexes are similar although the male is larger and has a longer beak and neck.
Size: – Typical Adult is 32-37 inches.
Food: – Aquatic vegetation, sedges, and grazes on plains and stubble fields.
Habitat: – Wetlands, marshes, lakes, and estuaries in north China, and south-east Russia. Winters in central and eastern China.
Breeding Season: – From late April to May.
Eggs: – 5 to 8 (white color).
Notes: – The Swan Goose is a member of the Anser genus (Grey Geese). It has been domesticated and called the Chinese Goose. Due to hunting these birds have been in decline. They are shy and wary birds which give out a honking warning call when alarmed.