1. Department of Biological Sciences, Northern Illinois University, DeKalb, IL 60115;
2. Institute for the Study of the Environment, Sustainability, and Energy, Northern Illinois University, DeKalb, IL 60115;
3. Island Conservation, Santa Cruz, CA 95060;
4. BirdLife International, Cambridge CB2 3QZ, United Kingdom;
5. Ecology & Evolutionary Biology Department, Institute of Marine Sciences, University of California, Santa Cruz, CA 95060;
6. Oregon Cooperative Fish and Wildlife Research Unit, Department of Fisheries and Wildlife, Oregon State University, Corvallis, OR 97331;
7. Zoology & Ecology, University College Cork, Corcaigh, Ireland;
8. Grupo de Ecología y Conservación de Islas, A.C., Ensenada, C.P. 22800, Baja California, Mexico;
9. Wildlife Ecology Group, Institute of Natural Resources, Massey University, Palmerston North 4474, New Zealand;
10. Laboratory of Ecology Systematics and Evolution, University Paris-Sud, Orsay 91405, France;
11. Private address, Floreat, WA 6014, Australia;
12. School of Geography, Planning and Environmental Management, The University of Queensland, St Lucia, QLD 4072, Australia;
13. Landcare Research, Lincoln 7608, New Zealand;
14. Centre for Conservation Science, Royal Society for the Protection of Birds, Cambridge CB2 3QZ, United Kingdom;
15. Wildlife Conservation Society, Goroka, Eastern Highlands Province, Papua New Guinea;
16. Alaska National Maritime Wildlife Refuge, US Fish and Wildlife Service, Homer, AK 99603;
17. Institute for Environmental Protection and Research, I-00144 Rome, Italy;
18. Invasive Species Specialist Group, Species Survival Commission, International Union for the Conservation of Nature, I-00144 Rome, Italy;
19. Seabird Restoration Program, National Audubon Society, Ithaca, NY 14850;
20. Te Papa Tongarewa, Wellington 6011, New Zealand;
21. South Georgia Surveys, Beaver Island LandCare, Stanley, FIQQ IZZ, Falkland Islands;
22. Geography Department, Laney College, Oakland, CA 94607;
23. Island Biodiversity and Conservation Center, University of Seychelles, Anse Royale, Seychelles;
24. Island Conservation Society, Pointe Larue, Mahé, Seychelles;
25. School of Biological Sciences, University of Auckland, Auckland 1142, New Zealand;
26. Department of Statistics, University of Auckland, Auckland 1142, New Zealand;
27. Department of Zoology, University of Otago, Dunedin 9016, New Zealand;
28. Science and Capability Group, Department of Conservation, Auckland 1145, New Zealand;
29. Institute for Applied Ecology, Auckland University of Technology, Auckland 1142, New Zealand