1. US Geological Survey; Forest and Rangeland Ecosystem Science Center; Boise ID USA
2. Division of Migratory Birds; US Fish and Wildlife Service; Portland OR USA
3. Division of Forestry and Natural Resources; West Virginia University; Morgantown WV USA
4. Virginia Department of Game and Inland Fisheries; Richmond VA USA
5. Division of Migratory Birds; US Fish and Wildlife Service; Arlington VA USA