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In 2000, the North American population of the geese was estimated to be between 4 million and 5 million birds. [93] A 20-year study from 1983 to 2003 in Wichita, Kansas, found the size of the winter Canada goose population within the city limits increased from 1,600 to over 18,000 birds. [93]
The native range of the Atlantic Canada goose is the east coast of North America. These birds summer in eastern Labrador, Newfoundland, and various islands in the Gulf of St. Lawrence and winter in much of the eastern United States, as far south as North Carolina. [1]
The native range of the Vancouver Canada goose is southern Alaska from Glacier Bay down to western British Columbia, where 90% of this subspecies remains year-round. . Despite its name, this subspecies does not regularly occur in the city of Vancouver or the Lower Mainland, where it is replaced by the introduced resident Moffitt's Canada Geese (B. c. mo
The Moffitt's Canada goose (Branta canadensis moffitti), also known as the Western Canada goose or Great Basin Canada Goose is a subspecies of the Canada goose.Native to the western interior of North America surrounding the Rocky Mountains, its range has expanded due to introductions to various regions of western North America.
However, giant geese have both a lower call and a larger bill to body size ratio. Another good identifier includes the black on the neck, which starts much further up the neck than any other subspecies. The giant goose's white cheek patch is very large, reaching the lower bill. Unlike other variants, the underbelly is very pale.
Snow geese in North America have increased to the point where the tundra breeding areas in the Arctic and the saltmarsh wintering grounds are both becoming severely degraded, [16] and this affects other species using the same habitat. Major nest predators include Arctic foxes and skuas. [17]
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The black geese of the genus Branta are waterfowl belonging to the true geese and swans subfamily Anserinae. They occur in the northern coastal regions of the Palearctic and all over North America , migrating to more southerly coasts in winter, and as resident birds in the Hawaiian Islands .