AOU and COS Join Forces as New AOS

The American Ornithologists’ Union and Cooper Ornithological Society have announced that they will merge! The merged society will be called the American Ornithological Society (AOS).

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American Ornithology: Photo of Wood Thrush - (c) Lloyd Spitalnik

The American Ornithologists' Union and Cooper Ornithological Society

A  gateway to information about the AOU and COS and resources for the scientific study and conservation of birds. Become a member; get involved!

American Ornithology: Photo of Baltimore Oriole - (c) Lloyd Spitalnik

Contribute to Citizen Science

Participate in bird surveys and submit your bird observations. Join the American Ornithologists' Union and Cooper Ornithological Society, and/or donate to support their many activities.

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American Ornithology: Photo of Canada Goose chick - (c) Paul Marto

Teaching or Studying Ornithology?

Attend meetings of the American Ornithologists' Union and Cooper Ornithological Society for up-to-date scientific information about birds. Access educational and photographic resources.

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American Ornithology: Photo of the Common Nighthawk - (c) Shawn Billerman

Access Scientific Resources

Want easy access to resources for the study and conservation of birds? Get current information on bird taxonomy, biodiversity, populations, sounds, and references.

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American Ornithology: Photo of the Green Honeycreeper - (c) Morgan Tingley

Want a Career in Ornithology?

Are you interested in birds? Do you want to contribute to bird conservation? Join the American Ornithologists' Union and Cooper Ornithological Society! Find jobs and funding opportunities.

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American Ornithology: Photo of Tufted Titmouse - (c) Lloyd Spitalnik

Welcome to our gateway to ornithology societies and resources
Promoting understanding, appreciation, and conservation of bird species and populations
The American Ornithologists’ Union and Cooper Ornithological Society

© 2016 American Ornithologists' Union
and Cooper Ornithological Society