Black Canyon Audubon Society
- Serves Gunnison, Delta, Montrose, Ouray, San Miguel, and Hinsdale Counties. Field trips.
- http://www.blackcanyonaudubon.org/

Denver Audubon
- Events, projects, trip reports, and FAQ.
- http://www.denveraudubon.org/

Grand Valley Audubon Society
- Serves the Grand Junction area. Programs, field trips, Lucy Ferril Ela Wildlife Sanctuary, newsletters, and bird counts.
- http://www.audubongv.org/

Arkansas Valley Audubon Society
- Based in Pueblo. Bird count results, legislative reports, events, birding opportunities, meetings, and conservation issues.
- http://www.socobirds.org/

Fort Collins Audubon Society
- News, field trips, programs, newsletters, legislative alerts, and birds and birding in the Fort Collins area.
- http://www.fortnet.org/Audubon/