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Species of Swan. Whooper Swan, Cygnus cygnus breeds in Iceland and subarctic Europe and Asia, migrating to temperate Europe and Asia in winter. Trumpeter Swan, Cygnus buccinator is a North American species very similar to the Whooper Swan (and sometimes treated as a subspecies of it), which was hunted almost to extinction but has since recovered: it is one of the heaviest flying animals, at up to 17 kilograms (38 pounds). Whistling Swan, Cygnus columbianus is a relatively small swan which breeds on the North American tundra, further north than other swans. It winters in the USA. Bewick's Swan, Cygnus bewickii is the Eurasian form which migrates from Arctic Russia to western Europe and eastern Asia (China, Japan) in winter. The reserves of the Royal Society for the Protection of Birds and of the Wildfowl and Wetlands Trust in Britain are important for Bewick's and Whooper Swans. It is often considered a subspecies of C. columbianus, creating the species Tundra Swan. Black Swan, Cygnus atratus of Australia, and introduced in New Zealand. The Black Swan is the official state emblem of Western Australia, and is also the symbol of the Sydney beachside suburb of Dee Why. New Zealand Swan, Cygnus atratus sumnerensis Conservation status: Prehistoric Black-necked Swan, Cygnus melancoryphus of South America, formerly Sthenelides melanocorypha. Mute Swan, Cygnus olor, is a common temperate Eurasian species, often semi-domesticated; descendants of domestic flocks are naturalized in the United States and elsewhere. |
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