1. Dept of Ecology and Evolutionary Biology; Univ. of Connecticut; CT USA
2. School of Biological and Biomedical Sciences, Univ. of Durham; Durham UK
3. Betty and Gordon Moore Center for Science, Conservation International; Arlington VA USA
4. BirdLife International, David Attenborough Building; Cambridge UK
5. Wildlife Conservation Society Albertine Rift Program; Kampala Uganda
6. Conservation Science Group, Zoology Dept, Cambridge Conservation Initiative, Cambridge Univ.; Cambridge UK