a swan, Cygnus columbianus, nesting in tundra regions of both the New and Old Worlds, having a black bill with a yellow spot at the base. Cf. whistling swan, Bewick's swan .
TUNDRA SWAN
Meaning of TUNDRA SWAN in English
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012