a tundra swan subspecies, Cygnus columbianus bewickii, of Eurasia, having white plumage, black legs, and a yellow patch on a black bill.
Origin of Bewick's swan
First recorded in 1820–30; after T. Bewick
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a white Old World swan, Cygnus bewickii, having a black bill with a small yellow base
Word Origin for Bewick's swan
named after Thomas Bewick (1753–1828), English engraver noted esp for his woodcuts of birds
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012