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