The American Ornithological Society claims the authority to establish standardized English bird names throughout North and South Americas.

[2] In 2013, the American Ornithologists' Union (AOU) announced a collaboration with the Cooper Ornithological Society, streamlining operations through joint meetings, a shared publishing office, and a reorientation of their journals.

The addressees were selected mainly because of their "scientific standing, but somewhat with regard to geographical representation, it being desirable to make the gathering as catholic and non-sectional as possible."

[3] In 2013, the American Ornithologists' Union announced a close partnership with the Cooper Ornithological Society, including joint meetings, a centralized publishing office, and a refocusing of their respective journals to increase efficiency of research.

[5] In October 2023, the AOS announced that it was set to rename all bird species associated with individuals, aiming to eliminate names linked to figures with racist pasts.

Aiming for more descriptive names based on habitat or physical features, the renaming process would involve public input.

[8] Honorary Fellows are limited to 100 and are "chosen for exceptional ornithological eminence and must at the time of their election be residents of a country other than the United States of America or Canada."

[8] Fellows are chosen "for exceptional and sustained contributions to ornithology and/or service to the Union" and must be residents or citizens of the Western Hemisphere when elected.

The AOS presents annual awards to recognize achievements and service, support research, and encourage student participation.