American Ornithologists' Union

The American Ornithological Society (AOS), formerly the American Ornithologists' Union (AOU), is "the oldest and largest organization in the New World devoted to the scientific study of birds". The AOS North American Classification Committee (NACC) maintains a checklist of North and Middle American Birds for which updates are regularly published.

The geographic area covered includes North and Central America from the boundary of Panama and Colombia northwards and including Hawaii, Bermuda and the West Indies. It is thus significantly larger than the area covered by the ABA list.

The most recent update incorporated in BUBO Listing is the 60th supplement published in The Auk: Ornithological Advanceshttps://doi.org/10.1093/auk/ukz042.

First select authority to copy existing species from, then type species name, or enter a new species directly.

Species name is defaulted from the previous species row and should of course be overwritten!.

Genus is defaulted from the previous species row but may need overwriting; specific needs to be entered in either case.


Check the boxes below to also add species to the appropriate subordinate authorities. clear all

Delete species

NB: Species name for the old taxon should be updated to differentiate it from the split taxa using a '/' or '[group]', e.g. Species A/Species B or Species A [group].

NB: Scientific should also be updated similarly, e.g. Genus specific A/specific B or Genus specific A [group].

NB: Notes only allow up to 255 characters, but there is no enforcement of this. Anything longer will be truncated without warning.

NB: Species name for the old taxon should be updated to differentiate it from the split taxa using '[lumped]', e.g. Species A [lumped].

NB: Scientific should also be updated, using '[lumped]' or brackets for the old specific name, e.g. Genus specific [lumped] or Genus [specific] subspecific.

NB: Notes only allow up to 255 characters, but there is no enforcement of this. Anything longer will be truncated without warning.