Friday, June 11, 2010

Magpie Geese

The Magpie Goose, Anseranas semipalmata, is a waterbird species found in coastal northern Australia and savannah in southern New Guinea. It is a unique member of the order Anseriformes, and arranged in a family and genus distinct from all other living waterfowl. The Magpie Goose is a resident breeder in northern Australia and in southern New Guinea.
Magpie-geese are unmistakable birds with their black and white plumage and yellowish legs. The feet are only partially webbed, although the Magpie Goose will feed on vegetable matter in the water as well as on land. Males are larger than females. Unlike true geese, the moult is gradual, and there is no flightless period. The voice is a loud honking.
Description
The Magpie Goose has a black neck and head, with a characteristic knob on the crown (larger in males), which increases in size with age. The underparts are white, with contrasting black edges on the underwing. The bill, legs and feet are orange. The Magpie Goose differs from most waterfowl in having strongly clawed toes that are webbed only on their basal halves (i.e. only partly webbed). Females are slightly smaller than males.

Where does it live?

Distribution
The Magpie Goose is widespread throughout coastal northern and eastern Australia. It can be seen from Fitzroy River, Western Australia, through northern Australia to Rockhampton, Queensland, and has been extending its range into coastal New South Wales to the Clarence River and further south.
Habitat
The Magpie Goose is seen in floodplains and wet grasslands. Some individuals, mostly younger birds, may be seen at quite long distances inland.

What does it do?

Feeding
Large, noisy flocks of up to a few thousand birds congregate to feed on aquatic vegetation. The Magpie Goose is a specialized feeder with wild rice, Oryza, Paspalum, Panicum and spike-rush, Eleocharis, forming the bulk of its diet.
Breeding
During the breeding season, Magpie Geese build nests in secluded places, usually close to wetlands. The nest is almost single-handedly constructed by the male. It usually consists of a simple unlined cup placed either in a floating platform of trampled reeds or built in tree-tops. Pairs of geese mate for life, but a male may have two females. Two females may occasionally use the same nest to lay the large, oval, off-white coloured eggs. All adults share incubation and care for the young.
http://birdsinbackyards.net/species/Anseranas-semipalmata

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