Tundra Swan {!--고니--> - Yukon Delta National Wildlife Refuge From the U.S. Fish and Wildlife Service's online digital media library .
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Metadata
Title: Tundra swan
Creator: Hollingsworth, John and Karen
Source: WV10270-001
Publisher: U.S. Fish and Wildlife Service
Contributor: NATIONAL CONSERVATION TRAINING CENTER-PUBLICATIONS AND TRAINING MATERIALS
Rights: (public domain)
Subject: Alaska
Birds
Migratory birds
Yukon Delta National Wildlife Refuge
waterfowl
The tundra swan (Cygnus columbianus) is a small Holarctic swan. The two taxa within it are usually regarded as conspecific, but are also sometimes split into two species: Bewick's swan (Cygnus bewickii) of the Palaearctic and the whistling swan (Cygnus columbianus) proper of the Nearctic.
