1. Biological Field Station; Makerere University; PO Box 967 Kampala Uganda
2. Department of Biology; McGill University; Montreal Quebec H3A 2A7 Canada
3. Research Institute for the Environment and Livelihoods (RIEL); Charles Darwin University; Darwin NT 0909 Australia
4. Department of Anthropology; Hunter College of the City University of New York; NY U.S.A.
5. New York Consortium of Evolutionary Primatology; New York NY U.S.A.
6. Uganda Wildlife Authority; PO Box 3530 Kampala Uganda
7. McGill School of Environment and Department of Anthropology; McGill University; Montreal Quebec H3A 2A7 Canada
8. Wildlife Conservation Society; Bronx NY U.S.A.