As of September 2016, the International Union for Conservation of Nature (IUCN) lists 7872 least concern avian species. 76% of all evaluated avian species are listed as least concern. No subpopulations of birds have been evaluated by the IUCN.
This is a complete list of least concern avian species evaluated by the IUCN. Where possible common names for taxa are given while links point to the scientific name used by the IUCN.
Procellariiformes includes petrels and albatrosses. There are 54 species in the order Procellariiformes assessed as least concern.
There are 98 species in the order Gruiformes assessed as least concern.
There are 226 parrot species assessed as least concern.
There are 34 species in the order Suliformes assessed as least concern.
The gannets and boobies
There are 82 species in the order Pelecaniformes assessed as least concern.Hamerkop
There are 186 species in the order Galliformes assessed as least concern.
There are 38 species in the order Struthioniformes assessed as least concern.
Bucerotiformes includes hornbills, hoopoe and wood hoopoes. There are 46 species in the order Bucerotiformes assessed as least concern.Hoopoe
Accipitriformes includes most of the diurnal birds of prey. There are 163 species in the order Accipitriformes assessed as least concern.Osprey
There are 126 species in the order Anseriformes assessed as least concern.Horned screamer
There are 161 owl species assessed as least concern.
There are 276 species in the order Charadriiformes assessed as least concern.
Coraciiformes includes kingfishers and bee-eaters. There are 137 species in the order Coraciiformes assessed as least concern.Pitta-like ground roller
There are 4808 passerine species assessed as least concern.
There are 491 species in the order Caprimulgiformes assessed as least concern.Oilbird
There are 404 species in the order Piciformes assessed as least concern.Prong-billed barbet