COS hosts quality field experiences for its members and the general public. Most field trips are free! Our trips give everyone the opportunity to learn from some of the best birders in the Chicago area.  We also provide field trips focused on beginning birders as well as some trips in Spanish.  

COS provides education to its members and the general public about birds and threats to their habitat. COS hosts educational workshops taught by experts from around the world. Members also present bird programs for local school groups.