1. Michigan State University, Department of Forestry , 480 Wilson Road, East Lansing, Michigan , USA
2. Michigan State University, Department of Fisheries and Wildlife , 480 Wilson Road, East Lansing, Michigan , USA
3. Michigan Department of Natural Resources, Wildlife Division , 525 West Allegan St, Lansing, MI , USA
4. Michigan Department of Natural Resources, Forest Resources Division , 525 West Allegan St, Lansing, MI , USA