About the Authors

Peter D Walsh
Max-Planck-Institute for Evolutionary Primatology, Leipzig, Germany

Roman Biek, Leslie A Real
Department of Biology, Emory University, Atlanta, Georgia, United States of America

Corresponding Author

walsh@eva.mpg.de

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

PDW, RB, and LAR analyzed the data and wrote the paper.