About the Authors

Stacy Rosenbaum

srosenbaum@uchicago.edu

Affiliation Department of Anthropology, University of California Los Angeles, Los Angeles, California, United States of America

Jean Paul Hirwa

Affiliation Dian Fossey Gorilla Fund International, Musanze, Rwanda

Joan B. Silk

Affiliations School of Human Evolution and Social Change, Arizona State University, Tempe, Arizona, United States of America, Institute for Human Origins, Arizona State University, Tempe, Arizona, United States of America

Linda Vigilant

Affiliation Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany

Tara S. Stoinski

Affiliation Dian Fossey Gorilla Fund International, Atlanta, Georgia, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SR JS TS. Performed the experiments: SR JPH LV. Analyzed the data: SR JPH LV JS TS. Contributed reagents/materials/analysis tools: LV. Wrote the paper: SR JS TS.