The Cooper Ornithological Society (COS), formerly the Cooper Ornithological Club, was an American ornithological society. It was founded in 1893 in California and operated until 2016. Its name commemorated James Graham Cooper, an early California biologist. It published the ornithological journal The Condor and the monograph series Studies in Avian Biology. It presented the annual Loye and Alden Miller Research Award, which is given for lifetime achievement in ornithological research and was a member of the Ornithological Council.
- Country
- United States
- Headquarters
- United States
- Inception
- 1893
- Website
