Uccelli simili a Whooper Swan

Key differences

The Mute Swan has an orange bill with a prominent black knob at the base (larger in males), and typically holds its neck in an S-curve with the bill pointed downwards. It is largely silent, only hissing when disturbed. Whooper Swans have a yellow and black bill, hold their neck straight, and are very vocal with bugling calls.

Key differences

The Tundra Swan (Bewick's Swan in Eurasia) is smaller than the Whooper Swan. Its bill also has a yellow and black pattern, but the yellow patch is typically smaller and more rounded, not extending to a point on the culmen as in the Whooper Swan. The black area on the bill is more extensive in Bewick's. Calls are similar but generally higher-pitched and less resonant than the Whooper Swan's.