Trumpeter Swan an indicator of wildlife sustainability in South Coastal British Columbia

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Source: Environment Canada, Canadian Wildlife Service, Hinterland Who's Who - Trumpeter Swan.

Biologists have defined 3 different populations of Trumpeter Swans in North America based on the breeding distribution. The largest, the Pacific Coast Population, consists of birds breeding mainly in the Interior of Alaska. The Rocky Mountain Population consists of 2 major breeding stocks, a sedentary U.S. flock located in southeast Idaho, southwest Montana and northwest Wyoming and a migratory Canadian flock breeding in northeast B.C., northwest Alberta, southeast Yukon and southwest Northwest Territories. The Interior Population is comprised of flocks breeding to the east of the Rocky Mountain Population. During the 2000 North America-wide survey of breeding Trumpeter Swans, the Pacific Coast Population was calculated to be 17,551 individuals, the Rocky Mountain Population 3,666, and the Interior Population 2,430 (Caithamer, 2001).