About the Authors

Stephen Blake

To whom correspondence should be addressed. E-mail: sblake@uuplus.com

Affiliations Africa Program, Wildlife Conservation Society, Bronx, New York, United States of America , Department of Geography, University of Maryland, College Park, Maryland, United States of America

Samantha Strindberg

Affiliation Africa Program, Wildlife Conservation Society, Bronx, New York, United States of America

Patrick Boudjan

Affiliation Africa Program, Wildlife Conservation Society, Bronx, New York, United States of America

Calixte Makombo

Affiliation Africa Program, Wildlife Conservation Society, Bronx, New York, United States of America

Inogwabini Bila-Isia

Affiliation Africa Program, Wildlife Conservation Society, Bronx, New York, United States of America

Omari Ilambu

Affiliation Africa Program, Wildlife Conservation Society, Bronx, New York, United States of America

Falk Grossmann

Affiliation Africa Program, Wildlife Conservation Society, Bronx, New York, United States of America

Lambert Bene-Bene

Affiliation World Wildlife Fund–Cameroon, Yaoundé, Cameroon

Bruno de Semboli

Affiliation World Wildlife Fund–Dzanga-Sangha, Bangui, Central African Republic

Valentin Mbenzo

Affiliation Africa Program, Wildlife Conservation Society, Bronx, New York, United States of America

Dino S'hwa

Affiliation Africa Program, Wildlife Conservation Society, Bronx, New York, United States of America

Rosine Bayogo

Affiliation Bangassou Forest Project, Canadian Center for International Studies and Cooperation, Bangui, Central African Republic

Liz Williamson

Affiliation Africa Program, Wildlife Conservation Society, Bronx, New York, United States of America

Mike Fay

Affiliation Africa Program, Wildlife Conservation Society, Bronx, New York, United States of America

John Hart

Affiliation Africa Program, Wildlife Conservation Society, Bronx, New York, United States of America

Fiona Maisels

Affiliation Africa Program, Wildlife Conservation Society, Bronx, New York, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

SB, SS, MF, and JH conceived and designed the experiments. PB, CM, IBI, OI, FG, LBB, BdS, VM, DS, RB, LW, MF, and FM performed the experiments. SB and SS analyzed the data and wrote the paper.