- Anas, genus Anas - type genus of the Anatidae: freshwater ducks
--1 is a kind of bird genus
--1 is a member of Anatidae, family Anatidae
--1 has members:mallard, Anas platyrhynchos; black duck, Anas rubripes; teal; widgeon, wigeon, Anas penelope; shoveler, shoveller, broadbill, Anas clypeata; pintail, pin-tailed duck, Anas acuta