True to their name, tundra swans, cygnus columbianus, breed in the Arctic and subarctic tundra. This species is sometimes split into two subspecies, Bewick’s swan and whistling swan. Both are all white, with variable-sized yellow patches on the base of the bill. They eat mostly aquatic vegetation, although in some areas they may feed heavily on waste grain and other land plants.
Weight: 16 lbs.