Anatidae

This is a taxonomic family that includes many sub-aquatic birds. Due to their similar features many people recognize various members of this family as belonging into some related, unnamed group (sometimes called "water birds", but not always, as those words can include other water-based birds like seagulls and pelicans, but the phrase itself is usually intended to mean Anatidae). These include geese, swans, ducks, and various other birds.
Category:Ducks
Category:Anatidae
Category:Swans
Category:Geese