WNeognathae
WAccipitrimorphae
WAdzebill
WAequorlitornithes
WAfroaves
WApodimorphae
WArdeae
WAustralaves
WAustrodyptornithes
WBucerotiformes
WCavitaves
WColumbaves
WColumbea
WColumbimorphae
WCoraciimorphae
WEucavitaves
WEufalconimorphae
WEurypygiformes
WEurypygimorphae
WGastornithiformes
WGruae
WGruimorphae
WInopinaves
WMetaves
WMirandornithes
WNeoaves
WNotopalaeognathae
WNovaeratitae
WOdontoanserae
WOtidae
WOtidimorphae
WPiciformes
WPicocoraciae
WPicodynastornithes
WPsittacopasserae
WRamphastides
WTelluraves
WTerrestrornithes
WVanescaves
WZygodactylidae