Neornithes Gadow, 1893 - living birds
Neognathae Pycraft 1900
see Cohort Neognathae Pycraft, 1900
Galloanserae Sibley, Ahlquist & Monroe Jr., 1988
see Subcohort Galloanserae Sibley, Ahlquist & Monroe Jr., 1988
[Order] Anseriformes Wagler, 1831 - waterfowl and screamers
Family Anatidae Vigors, 1825 - ducks, geese, swans
Subfamily Anatinae Vigors, 1825 - pond ducks
Genus Oxyura Bonaparte, 1828 - blue-billed duck
Oxyura vittata (Philippi, 1860) - lake duck