COS Needs You!

COS has been around for over a hundred years now, but the only way it will reach its next hundred is with people dedicated to getting it there. We need you! As an all volunteer organization, COS is only as strong as the many people who help us achieve our mission.

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Community, AdvocacyEdward Warden
The Legacy of Douglas C. Anderson

Earlier this year, COS received a surprising and generous gift from the estate of Doug C. Anderson. Former president of both COS and the Chicago Audubon Society (CAS), Doug was a fixture among local birders for decades.

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Edward Warden