Tara R. Harris, Colin A. Chapman, and Steven L. Monfort Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, Leipzig, Germany 04103, Conservation and Research Center, Smithsonian National Zoo, 1500 Remount Road, Front Royal, VA 22630, Department of Anthropology and McGill School of Environment, 855 Sherbrooke St. West, McGill University, Montreal, Qu...
