Although the most important area, including Thorn Lake, is in located in southeastern Jackson County, the general birding area straddles the Jackson-Washtenaw County line. In Jackson Co. it is in Norvell Twp., T4S, R2E, primarily in section 13, but also sections 12 & 24. In Washtenaw Co. it is in Manchester Twp., T4S, R3E, primarily in section 18, but also in section 7. Most of this land is owned by Glynn Trolz Associates totaling over 1,860 acres.
Thorn Lake is one the most important areas for migrating waterfowl in southcentral Michigan. Some of the rare birds seen over the last several years include a Snowy Egret, Little Blue Heron, Bald Eagle, Golden Eagle, Little Gull, Ross?s Goose, and Greater White-fronted Goose.
Sale and development of this privately-owned site is a possible future threat. Efforts should be taken to avoid parceling out the shore of this lake as it would present immeasurable disturbance to the waterfowl.
Most of this land is owned by Glynn Trolz Associates totaling over 1,860 acres.