1. US National Park Service, Great Lakes Inventory and Monitoring Network, Ashland, WI 54806 USA
2. Raptor Environmental, 7280 Susan Springs Drive, West Chester, OH 45069 USA
3. Department of Biological Sciences, 430 Irvine Hall, Ohio University, Athens, OH 45701 USA
4. Eco-Ascension Research and Consulting, 1181 Nelson Way, McKinleyville, CA 95519 USA
5. Audubon Minnesota, 2355 Highway 36 West, Suite 400, Roseville, MN 55113 USA