About the Authors

Vicky M. Oelze

viktoria_oelze@eva.mpg.de

Affiliations Max Planck Institute for Evolutionary Anthropology, Department of Primatology, Leipzig, Saxony, Germany, iDiv – German Centre for Integrative Biodiversity Research, Leipzig, Saxony, Germany

Pamela Heidi Douglas

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

Colleen R. Stephens

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

Martin Surbeck

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

Verena Behringer

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

Michael P. Richards

Affiliations Max Planck Institute for Evolutionary Anthropology, Department of Human Evolution, Leipzig, Saxony, Germany, Department of Anthropology, University of British Columbia, Vancouver, British Columbia, Canada

Barbara Fruth

Affiliations Division of Neurobiology, Ludwig-Maximilians University Munich, Bavaria, Germany, Centre for Research and Conservation, Royal Zoological Society of Antwerp, Antwerp, Flanders, Belgium

Gottfried Hohmann

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

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: VMO GH.Formal analysis: CRS.Funding acquisition: VMO.Investigation: MS.Methodology: VMO MPR.Project administration: GH BF MPR.Resources: MPR BF GH.Supervision: GH.Visualization: VB.Writing – original draft: VMO GH MS.Writing – review & editing: VB PHD.