[1] UCL, Dept Biol Anthropol, London, England
[2] Max Planck Inst Ornithol, Dept Migrat & Immuno Ecol, Radolfzell am Bodensee, Germany
[3] Univ Konstanz, Dept Biol, Constance, Germany
[4] Univ Stirling, Sch Nat Sci, African Forest Ecol Grp, Stirling FK9 4LA, Scotland
[5] IRET, Libreville, Gabon
[6] Frankfurt Zool Soc, Tshopo, DEM REP CONGO
[7] Ghana Cocoa Board, Environm Sustainabil Project, United Nations Dev Programme, Adabraka, Accra, Ghana
[8] Ankasa Conservat Area, Wildlife Div Forestry Commiss Ghana, Elubo, Takoradi, Ghana
[9] Wildlife Conservat Soc, New York, NY USA
[10] Univ Missouri, Whitney Harris World Ecol Ctr, St Louis, MO 63121 USA
[11] Minist Foret Environm & Protect Ressources Nat, Libreville, Gabon
[12] Wildlife Conservat Soc, Congo Program, Brazzaville, Rep Congo
[13] Tacugama Chimpanzee Sanctuary, Freetown, Sierra Leone
[14] Independent Researcher, Montreal, PQ, Canada
[15] W Chester Univ, Dept Anthropol & Sociol & Psychol, W Chester, PA 19380 USA
[16] McGill Univ, Dept Anthropol, Montreal, PQ, Canada
[17] McGill Univ, McGill Sch Environm, Montreal, PQ, Canada
[18] Wildlife Conservat Soc, Tanzania Program, Zanzibar, Tanzania
[19] Wildlife Conservat Soc, Calabar, Nigeria
[20] African Wildlife Fdn, Nairobi, Kenya
[21] World Wide Fund Nat, Limbe, Cameroon
[22] World Wide Fund Nat, Mt Cameroon NP, Limbe, Cameroon
[23] World Wide Fund Nat CARPO, Jengi Tridom, Yaunde, Cameroon
[24] Kyoto Univ, Primate Res Inst, Kyoto, Japan
[25] Support Conservat Bonobos, Luo Reserve, DEM REP CONGO
[26] West African Primate Conservat Act, Accra, Ghana
[27] Independent Researcher, Rome, Italy
[28] Lukuru Wildlife Res Fdn, Kinshasa, DEM REP CONGO
[29] Max Planck Inst Evolutionary Anthropol, Dept Primatol, Leipzig, Germany
[30] Wildlife Conservat Soc, Monts Cristal, Gabon
[31] World Wide Fund Nat, Berlin, Germany
[32] Univ Amsterdam, Inst Biodivers & Ecosyst Dynam, Amsterdam, Netherlands
[33] Univ Ghana, Dept Anim Biol & Conservat Sci, Legon, Ghana
[34] Cent Africa Reg Programme Off, World Wide Fund Nat, Yaounde, Cameroon
[35] German Ctr Integrat Biodivers Res iDiv, Leipzig, Germany
[36] World Wide Fund Nat, Gamba, Libreville, Gabon
[37] James Madison Univ, Dept Sociol & Anthropol, Harrisonburg, VA 22807 USA
[38] North Eastern Parks Programme, Windhoek, Namibia
[39] Minist Interior & Wildlife Conservat, Directorate Wildlife Serv, Juba, Sudan
[40] Lester E Fisher Ctr Great Ape Res, Chicago, IL USA
[41] World Wide Fund Nat, Itombwe Conservat Programme, Bukavu, South Kivu Prov, DEM REP CONGO
[42] Ctr Suisse Recherches Scientif Cote Ivoire, Abidjan, Cote Ivoire
[43] Wildlife Conservat Soc, Ruaha Katavi Landscape, Tanzania
[44] Zool Soc London, London, England
[45] Wild Chimpanzee Fdn, Abidjan, Cote Ivoire
[46] Inst Natl Environm & Conservat Nat, Bururi, Burundi
[47] Bia Conservat Area, Sefwi Wiawso, Ghana
[48] Fed Univ Technol Akure, Dept Ecotourism & Wildlife Management, Akure, Nigeria
[49] Univ Liege, Gembloux Agro Bio Tech, Unit Forest & Nat Management, Lab Trop & Subtrop Forestry, Gembloux, Belgium
[50] Royal Belgian Inst Nat Sci, Conservat Biol Unit, Brussels, Belgium