About the Authors
- Serge A. Wich
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* E-mail: sergealexander.wich@uzh.ch
Affiliations Anthropological Institute, University of Zurich, Zurich, Switzerland, Sumatran Orangutan Conservation Programme (PanEco-YEL), Medan, Sumatra, Indonesia
- Erin R. Vogel
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Affiliation The Center for the Advances Study of Hominid Paleobiology, The George Washington University, Washington D. C. United States of America
- Michael D. Larsen
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Affiliation Department of Statistics, The George Washington University, Washington, United States of America
- Gabriella Fredriksson
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Affiliation Institute for Biodiversity and Ecosystem Dynamics/Zoological Museum, University of Amsterdam, Amsterdam, The Netherlands
- Mark Leighton
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Affiliation Great Ape World Heritage Species Project, Babson Park, Massachusetts, United States of America
- Carey P. Yeager
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Affiliation Zoology Department, University of Florida, Gainesville, Florida, United States of America
- Francis Q. Brearley
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Affiliation School of Science and the Environment, Manchester Metropolitan University, Manchester, United Kingdom
- Carel P. van Schaik
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Affiliation Anthropological Institute, University of Zurich, Zurich, Switzerland
- Andrew J. Marshall
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Affiliation Graduate Group in Ecology, and Animal Behaviour Graduate Group, Department of Anthropology, University of California Davis, Davis, California, United States of America
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: SAW CPvS AJM. Performed the experiments: SAW GF ML CPY FQB CPvS AJM. Analyzed the data: SAW AJM EV MDL. Contributed reagents/materials/analysis tools: SAW AJM EV MDL. Wrote the paper: SAW EV MDL AJM.