Champaign County Audubon Society - Newsletter, field trips, events, and local birding areas. Lake County Audubon Society - Chapter of National Audubon serving Lake County. Information about programs and field trips. Chicago Audubon Society - Serves the Chicago area. Conservation news, calendar of events, newsletter archives, and a rare bird alert. Lake-Cook Audubon Society - Chapter of the Illinois Audubon Society based in Highland Park, Lake County. Information on bird walks and programs. Decatur Audubon Society - Meetings, activities, educational opportunities, and newsletter articles. Thorn Creek Audubon Society - Serves southern Cook County and all of Will County. Find list of officers, membership information, calendar, newsletters, and activities. Middlefork Audubon Society - Overview of activities. Danville. Prairie Woods Audubon Society - Based in Arlington Heights, serves northwest Cook County. Meetings, field trips, educational programs, and newsletters.