About the Authors

Heather R. Coffin

Affiliation Institute for Mind and Biology, The University of Chicago, Chicago, Illinois, United States of America

Jason V. Watters

Affiliations Committee on Evolutionary Biology, The University of Chicago, Chicago, Illinois, United States of America, Chicago Zoological Society, Brookfield, Illinois, United States of America

Jill M. Mateo

jmateo@uchicago.edu

Affiliations Institute for Mind and Biology, The University of Chicago, Chicago, Illinois, United States of America, Committee on Evolutionary Biology, The University of Chicago, Chicago, Illinois, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HRC JVW JMM. Performed the experiments: HRC. Analyzed the data: HRC JVW JMM. Wrote the paper: HRC JVW JMM.