Whistling Swan, Cygnus columbianus is a small swan which breeds on the North American tundra, further north than other swans and winters in the USA.

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©David Trozzo

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anatidae animal anseriformes biology bird chesapeake chesapeake bay Cygnus columbianus feathered flock ice icey Maryland md migration migratory North America ornithology  swan swans tundra waterfowl whistling wild wildlife winged winter wintering

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