Anas semipalmata Latham, 1798, Hawkesbury River, New South Wales, Australia. Monotypic.
OTHER COMMON NAMES
English: Pied goose; Semipalmated goose; French: Canaroie semipalmй; German: SpaltfuЯgans; Spanish: Ganso Urraco.
27.6–35.4 in (70–90 cm); female 4.4 lb (2.0 kg); male 6.2 lb (2.8 kg); webs on the toes reduced; hind toe very long.
Southern New Guinea and Queensland, Australia; reintroduced in Victoria, southeastern Australia.
Swamps and grasslands in riverine floodplains.
Often bigamous. Parental care extensive. Gregarious.
FEEDING ECOLOGY AND DIET
Feeds on grasses and seeds using its feet to bend down taller plants. Also digs out roots and bulbs with its hooked bill.
Often bigamous, with one male paired with two females. One or both females lay 1-16 eggs in same nest, Feb.–Apr. in north, Aug.–Sept. in south. The nest is a mound of floating vegetation. Incubation 23–25 days; fledging c. 11 weeks; sexual maturity after two years in females and 3–4 years in males.
Size of populations increasing. Generally common in its habitat. Protected from hunting except during open season in Northern Territory, Australia.
SIGNIFICANCE TO HUMANS
Hunted traditionally by aboriginies. Considered a pest by rice growers.
Copyright © 2016-2017 Animalia Life | All rights reserved