About the Authors

L. Mark Elbroch

melbroch@panthera.org

Affiliation Panthera, New York, New York, United States of America

Patrick E. Lendrum

Affiliation Panthera, New York, New York, United States of America

Jesse Newby

Affiliation Craighead Beringia South, Kelly, Wyoming, United States of America

Howard Quigley

Affiliation Panthera, New York, New York, United States of America

Derek Craighead

Affiliation Craighead Beringia South, Kelly, Wyoming, United States of America

Competing Interests

The authors received an additional donation from a small, 1-person commercial enterprise, called Hogan Films. This donation, as well, was given without any demands on how the money was spent, nor did Hogan Films make any demands on research methods or direction. Hogan Films does not lay claim to any ownerships, patents etc. that would represent a conflict of interest. This donation does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: LME PL JN. Performed the experiments: LME PL JN HQ. Analyzed the data: LME PL JN. Contributed reagents/materials/analysis tools: HQ DC. Wrote the manuscript: LME PL JN HQ DC.