A swan (Cygnini) is a kind of water bird, from the genera Cygnus and Coscoroba. They are in the subfamily Anserinae, in the family Anatidae, which also includes geese and ducks. Many swans live in colder places, such as northern Europe, Asia and North America. They live on water. They swim on top of the water and eat plants off the bottom of ponds, lakes, or oceans. They also eat insects and other small animals. Swans can also fly. A baby swan is called a cygnet.

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