The Whooper Swan holds its neck stiff and straight while swimming, exhibiting the black-tipped yellow bill. The yellow of the bill extends forward before the nostril in an acute wedge. They feed by dipping head and neck in water. Does not dive. Wings whistle in flight. Takes off from water after running on surface while flapping wings.
Immature Whooper Swans are a dusky gray color. They have black-tipped bills with a pink patch on teh base of the bill that apppears in the same shape as the yellow patch on the adult birds.
Size: 55-65 inches.
Breeding: Momogamous; may pair for life. Solitary.
Habitat: Breeds by variety of open shallow water, from steppe lakes to pools, also by coastal inlets and rivers.
Nesting: 1 brood per year.
Food: Eats invertebrates and water plants. Feeds by dipping head and neck in water. Does not dive.
Incubation: 35 days by female. Precocial young leave nest shortly after hatching. Tended by both sexes. First flight at 78-96 days.
Voice: Loud beautiful bugle-like call; a variety of honking and trumpeting calls; "gang-go-gang-go" or "hoo-hoo-hoo". Noisiest of all the swans.
In Flight: Wings whistle in flight. Takes off from water after running on surface while flapping wings.