About the Authors

Dana Pfefferle

Contributed equally to this work with: Dana Pfefferle, Kurt Hammerschmidt

dpfefferle@dpz.eu

Affiliations Behavioural Ecology Research Group, Institute of Biology, University of Leipzig, Leipzig, Germany, Junior Research Group of Primate Kin Selection, Department of Primatology, Max-Planck Institute for Evolutionary Anthropology, Leipzig, Germany, Cognitive Neuroscience Laboratory, German Primate Center, Göttingen, Germany, Leibniz-Science-Campus Primate Cognition, German Primate Center & Georg-August-University-Göttingen, Göttingen, Germany

Kurt Hammerschmidt

Contributed equally to this work with: Dana Pfefferle, Kurt Hammerschmidt

Affiliation Cognitive Ethology Laboratory, German Primate Center, Göttingen, Germany

Roger Mundry

Affiliation Max-Planck Institute for Evolutionary Anthropology, Leipzig, Germany

Angelina V. Ruiz-Lambides

Affiliations Junior Research Group of Primate Kin Selection, Department of Primatology, Max-Planck Institute for Evolutionary Anthropology, Leipzig, Germany, Caribbean Primate Research Center-Cayo Santiago, University of Puerto Rico, Puerto Rico, United States of America

Julia Fischer

Affiliations Leibniz-Science-Campus Primate Cognition, German Primate Center & Georg-August-University-Göttingen, Göttingen, Germany, Cognitive Ethology Laboratory, German Primate Center, Göttingen, Germany

Anja Widdig

Affiliations Behavioural Ecology Research Group, Institute of Biology, University of Leipzig, Leipzig, Germany, Junior Research Group of Primate Kin Selection, Department of Primatology, Max-Planck Institute for Evolutionary Anthropology, Leipzig, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: DP AW KH JF. Data curation: DP AW ARL. Formal analysis: DP KH RM. Funding acquisition: DP AW ARL. Investigation: DP. Methodology: DP KH JF AW. Project administration: DP. Resources: AW ARL. Software: RM KH. Supervision: AW. Writing - original draft: DP KH AW JF RM ARL. Writing - review & editing: DP KH AW RM JF ARL.