Cygnus columbianus columbianus


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Noun1.Cygnus columbianus columbianus - North American subspecies of tundra swan having a soft whistling noteCygnus columbianus columbianus - North American subspecies of tundra swan having a soft whistling note
Cygnus columbianus, tundra swan - swan that nests in tundra regions of the New and Old Worlds
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