Swans are birds of the family Anatidae within the genus Cygnus.

There are six to seven species of swan called the Black-necked Swan, Black Swan, Mute Swan, Trumpeter Swan,
Tundra swan which includes the Bewick's Swan and Whistling Swan, and the Whooper Swan. In addition there is another species known as the coscoroba swan, although this species is no longer considered one of the true swans. The swans are close relatives with geese and ducks.

Often seen gliding across lakes, the swan has long represented elegance and refinement.
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The swans are the largest members of the waterfowl family Anatidae, and are among the largest flying birds.

The largest species, including the mute swan, trumpeter swan, and whooper swan, can reach a length …show more content…
The Whooper Swans, Tundra Swans and the Trumpeter Swans are fully migratory. Evidence suggests that the
Black-necked Swan is migratory over part of its range.

Their calls consist of a loud, deep, sonorous, trumpet-like honking sounds, as well as peeps, hisses and gurgles.

Swans usually mate for life, though "divorce" does sometimes occur, particularly following nesting failure, and if a mate dies, the remaining swan will take up with another.
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Bonded pairs tend to remain together year-round; however, outside the breeding season, they are highly social and often congregate with large numbers of other swans. During the breeding season, pairs will, however, aggressively defend their territories.

Swans build their nests on land out of twigs and leaves, and the female swan lays between 3 and 9 eggs. The baby swans hatch out of their eggs after an incubation of just over a month.
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swans couple will guard their baby swans furiously from predators or any animal that she believes is a threat.
After swans scare off threat, they flap their wings and call to each other in celebration – sort of like a swan
high-five!