. "Olor bewickii (Yarrell, 1838)" . "Cygnus columbianus jankowskii" . "Cygnus bewickii jankowskii" . . "Cygnus columbianus jancowskii (lapsus)" . "Cygnus bewickii jankowski (lapsus)" . . "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 (C. columbianus) proper of the Nearctic. Birds from eastern Russia (roughly east of the Taimyr Peninsula) are sometimes separated as the subspecies C. c. jankowskii, but this is not widely accepted as distinct, most authors including them in C. c."@en . "(Bewick's swan/whistling swan)"@en . "IUCN3.1" . . "Anas columbianus (Ord, 1815)" . . . "LC" . . . . . "Tundra swan"@en . . "Cygnus bewickii (Yarrell, 1838)" . "Olor columbianus (Ord, 1815)" .