1. Forest and Rangeland Ecosystem Science Center; U.S. Geological Survey; 970 Lusk Street Boise ID 83706 U.S.A.
2. Migratory Bird Management; U.S. Fish and Wildlife Service; 1011 E. Tudor Road Anchorage AK 99501 U.S.A.
3. U.S. Fish and Wildlife Service; 755 Parfet Street, Suite 496B Lake CO 80215 U.S.A.
4. Manomet Center for Conservation Sciences; 81 Stage Point Road Manomet MA 02345 U.S.A.