1. Division of Migratory Bird Management, U.S. Fish and Wildlife Service, Anchorage, AK 99503, USA
2. Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
3. Fairbanks Fish and Wildlife Field Office, US Fish and Wildlife Service, Fairbanks, AK 99701, USA
4. Alaska Science Center, US Geological Survey, Anchorage, AK 99508, USA
5. Alaska SeaLife Center, Seward, AK 99664, USA
6. College of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Fairbanks, AK 99775, USA