1. School of Marine and Environmental Affairs, University of Washington, Seattle, WA 98195 USA;
2. Environmental and Fisheries Sciences Division, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA
3. Salish Sea Guillemot Network, Whidbey Audubon Society, Oak Harbor, WA 98277 USA
4. School of Marine and Environmental Affairs, University of Washington, Seattle, WA 98195 USA