1. Center for Ecosystem Sentinels, Department of Biology, University of Washington, Seattle, Washington 98195, USA
2. Wildlife Science Division, Washington Department of Fish and Wildlife, Olympia, Washington 98501, USA
3. Northwest Fisheries Science Center, National Oceanographic and Atmospheric Administration, Seattle, Washington 98112, USA
4. Biology Department, University of Puget Sound, Tacoma, Washington 98416, USA
5. Oikonos Ecosystem Knowledge, San Juan Bautista, Robinson Crusoe Island, Valparaíso Region, Chile
6. Mount Hood Environmental, Sandy, Oregon, 97055, USA
7. Northwest Fisheries Science Center, National Marine Fisheries Service, Seattle, Washington 98112, USA
8. Laboratory of Ornithology, Cornell University, Ithaca, New York 14850, USA