Ducks are birds. Ducks are also called 'waterfowl' because they are normally found in places where there is water like ponds, streams, and rivers. Ducks can live up to 20 years, depending on the species and if well cared for. The production of eggs is affected by daylight.
Duck is the common name for numerous species in the waterfowl family Anatidae which also includes swans and geese. Ducks are divided among several subfamilies in the family Anatidae; they do not represent a monophyletic group but a form taxon, since swans and geese are not considered ducks.
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