Contact Us

Let us know your thoughts and ideas.

• Have questions or suggestions for our organization?

• Want to be involved with COS?

• Do you have a conservation concern for birding in the Chicago area that COS should know about?

• Do you want to co-sponsor or invite our members to an event?

• Do you have a trip or program you would like to present with us?

Or write us via snail mail:

Chicago Ornithological Society

332 South Michigan Avenue #121- C980

Chicago, IL 60604