The authors would like to thank all Biodiversity Support Program staff who assisted during the development and publication of this review, and particularly Harry van der Linde. Thanks also to Amy Vedder, Bryan Curran, Paul and Sarah Elkan, John Poulsen, Connie Clark, Boo Maisels, Andre Kamdem Toham, Lisa Steel, Richard Carroll, Tony Mokombo, Olivier Langrand, Rob Solem, Laurent Somé, Steve Gartlan, Laurie Clark, Melissa Othman, Jim Graham, Fred Swartzendruber, Conrad Aveling, Lee White, Kate Abernethy, Caroline Tutin, Robert Nasi, George Boundzanga, Jake Brunner, J. G. Collomb, Allard Blom, David Hoyle, Roger Fotso, Philippe Auzel, Pauwel de Wachter, and others who provided invaluable background information for the review.