White-fronted Geese or Greater White-fronted Geese
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The White-fronted Goose (Anser albifrons) is a goose closely related to the smaller Lesser White-fronted Goose (A. erythropus). In North America it is known as the Greater White-fronted Goose.
Description:
Both white-fronted species have a very conspicuous white face and broad black bars which cross the belly, though the last two characters are occasionally observable to some extent in the Greylag Goose, which, however, has the bill and legs flesh-colored, and pale bluish-grey upper wing-coverts. In Northern and Central North America, the Greater Whitefront is colloquially called 'Specklebelly' due to the salt-and-pepper appearance of the underside.
White-fronts are 65-78 cm in length and have a 130-165 cm wingspan. They have bright orange legs and mouse-colored upper wing-coverts. They are smaller than Greylag Geese. As well as being larger than the Lesser White-fronted Goose, the Greater Whitefront lacks the yellow eye-ring of that species, and the white facial blaze does not extend upwards so far as in Lesser.
Distribution / Range:
The Greater Whitefront is divided into five subspecies. The nominate subspecies A. a. albifrons breeds in the far north of Europe and Asia, and winters further south and west in Europe. In the far east of Siberia east to arctic Canada, it is replaced by A. a. frontalis, slightly larger and with a marginally longer bill, wintering in the United States and Japan.
Two other restricted-range races occur slightly further south in northern North America; A. a. gambeli in interior northwest Canada, slightly larger still and wintering on the U.S. Gulf Coast, and the doubtfully distinct (Carboneras, 1992) A. a. elgasi (Tule Goose) in southwest Alaska, largest and longest-billed of all, wintering in California. All these races are similar in plumage, differing only in size.
Finally, the very distinct Greenland White-fronted Goose A. a. flavirostris breeding in western Greenland, is much darker overall, with only a very narrow white tip to the tail (broader on the other races), more black barring on its belly, and usually has an orange (not pink) bill. It winters in Ireland and western Scotland.
Recent ecological studies suggest the Greenland birds should probably be considered a separate species from A. albifrons (Fox & Stroud 2002). Of particular interest is its unusually long period of parental care and association, which may last several years and can include grandparenting, possibly uniquely among the Anseriformes.
In the British Isles, two races overwinter: Greenland birds in Scotland and Ireland, and Russian birds in England and Wales. They gather on farmland at favoured traditional sites, with a famous flock gathering at WWT Slimbridge, Gloucestershire, England.
A.a.albifrons and A.a.flavirostis are among the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.
Copyright: Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from Wikipedia.org
Diet / Feeding:
Ducks and geese generally feed on larvae and pupae usually found under rocks, aquatic animals, plant material, seeds, small fish, snails and crabs.
Feeding Ducks and Geese ...
We all enjoy waterfowl and many of us offer them food to encourage them to come over and stay around - and it works! Who doesn't like an easy meal!
However, the foods that we traditionally feed them at local ponds are utterly unsuitable for them and are likely to cause health problems down the road. Also, there may be local laws against feeding this species of bird - so it's best to check on that rather than facing consequences at a later stage.
- Click here to find out which foods to feed them that will offer the nutrition they need to survive a cold winter and remain healthy
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