About the Authors

Nicole Creanza

Contributed equally to this work with: Nicole Creanza, Laurel Fogarty

creanza@stanford.edu

Affiliation Department of Biological Sciences, Stanford University, Stanford, California, United States of America

Laurel Fogarty

Contributed equally to this work with: Nicole Creanza, Laurel Fogarty

Affiliation Center for Social Learning and Cognitive Evolution, School of Biology, University of St Andrews, St. Andrews, Fife, United Kingdom

Marcus W. Feldman

Affiliation Department of Biological Sciences, Stanford University, Stanford, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MWF NC LF. Performed the experiments: LF NC. Analyzed the data: NC LF. Contributed reagents/materials/analysis tools: NC LF MWF. Wrote the paper: MWF NC LF.