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Dave Young   cc-by

Anseriformes (Ducks, Geese, Swans, And Relatives) is a group of birds. There are 193 species of ducks, geese, swans, and relatives, in 67 genera and 5 families. Ducks, Geese, Swans, And Relatives includes groups like Presbyornithidae, Paranyrocidae, and Ducks, Geese, And Swans. Reproduction is dioecious.

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EOL has data for 8 attributes, including:

Known occurrences, collected specimens and observations of ducks, geese, swans, and relatives