ACKNOWLEDGEMENTS

We are grateful to Baltazar González Chávez, Luis Lasso, Cristian Gaviria, Laura Jaimes and local assistants who participated in field work and data collection within the Vida Silvestre Project. We also thank Maria Antonia Espitia, María Paula Barrera, local owners for providing access to the study sites and our partner organizations Fundación Biodiversa Colombia, Fundación Proyecto Primates and Fundación Orinoquia Biodiversa. Financial support was provided by Ecopetrol S.A. and Fundación Santo Domingo.