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Waterloo Natural History Association

The Waterloo Natural History Association is a nonprofit friends group of the Waterloo Recreation Area and the Eddy Discovery Center. Established in 1981 to enhance visitors' outdoor experiences in the park, the WNHA provides both program and financial support for the recreation area and visitor center.

Haehnle Sanctuary

Known for sandhill crane viewing, Haehnle Sanctuary is located 6 miles northeast of Jackson, Michigan, on Seymour Road. The Phyllis Haehnle Memorial Sanctuary, a Michigan Audubon sanctuary, has an area of over 1,000 acres. The varied habitats include beech and oak climax forests and native grasslands in the upland areas; among those in the wetland areas are a fen, a hardwood swamp, Eagle Lake and Mud Lake Marsh.