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September 11, 2026Short & citedBlog
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Field Notes • Birds

Swan

A swan is a large waterfowl in the family Anatidae, closely related to geese and ducks.

Updated September 11, 20261 min readCited sources

A swan is a large waterfowl in the family Anatidae, closely related to geese and ducks. Known for its long neck and graceful swimming, it is one of the largest flying birds.

What it is

Swans belong to the genus Cygnus (most species) and the subfamily Anserinae. They are the largest extant members of the waterfowl family, with heavy bodies, webbed feet, and broad bills. Many species are white, but some, like the black swan, have dark plumage.

Where it lives

Swans inhabit lakes, rivers, ponds, marshes, and coastal waters across temperate regions. They are mainly herbivorous, feeding on aquatic plants. In Canada, the tundra swan is a notable species that breeds in the Arctic and migrates through the country.

Key details

There are about six living true swan species, including the mute swan, whooper swan, trumpeter swan, tundra swan, black swan, and black-necked swan. The coscoroba swan is not generally considered a true swan. Swans are known for their slow wingbeats and outstretched necks in flight.

In short

  • Swans are the largest waterfowl in the family Anatidae.
  • They have long necks, webbed feet, and broad bills.
  • Most swans are white, but some species are dark-plumaged.
  • They are mainly herbivorous and live in wetlands and coastal waters.
Canadian angle

Swans are familiar across Canada, especially in wetlands, lakes, and migration stopovers. The tundra swan is particularly relevant to Canadian readers because it breeds in the Arctic and migrates through parts of Canada.

Quick questions

What is a swan?
A swan is a large waterbird in the family Anatidae, closely related to ducks and geese.
What do swans eat?
Swans are mainly herbivorous and feed largely on aquatic plants.
Where do swans live?
Swans live on or near lakes, rivers, wetlands, and some coastal waters.

Sources

  1. Encyclopaedia Britannicahttps://www.britannica.com/animal/swan
    Supports: Classification, size, anatomy, and general characteristics of swans.
  2. Wikipediahttps://en.wikipedia.org/wiki/Swan
    Supports: Genus Cygnus, relationship to geese and ducks, number of living species, and taxonomic notes.
  3. International Fund for Animal Welfarehttps://www.ifaw.org/animals/swans
    Supports: Species list, habitat, diet, life history, and general swan facts.
  4. Encyclopedia.comhttps://www.encyclopedia.com/plants-and-animals/animals/vertebrate-zoology/swan
    Supports: General description, family Anatidae, and genus Cygnus.