1. Department of Integrative Biology, Michigan State University, East Lansing, MI 48824, USA
2. Ecology, Evolution, and Behavior Program, Michigan State University, East Lansing, MI 48824, USA
3. Wildlife Conservation Society (WCS), Uganda Programme, PO Box 7487, Kampala, Uganda
4. KBA Secretariat, c/o BirdLife International, David Attenborough Building, Pembroke Street, Cambridge CB2 3QZ, UK
5. Conservation Science Group, Zoology Department, Cambridge University, Pembroke Street, Cambridge CB2 3QZ, UK
6. Kabale University, PO Box 317, Kabale, Uganda