About the Authors

James W. Rivers

jim.rivers@oregonstate.edu

Affiliation Department of Forest Ecosystems and Society, Oregon State University, Corvallis, Oregon, United States of America

J. Matthew Johnson

Current address: U.S. Forest Service, Plumas National Forest, Quincy, California, United States of America

Affiliation U.S. Geological Survey Forest and Rangeland Ecosystem Science Center, Corvallis, Oregon, United States of America

Susan M. Haig

Affiliation U.S. Geological Survey Forest and Rangeland Ecosystem Science Center, Corvallis, Oregon, United States of America

Carl J. Schwarz

Affiliation Department of Statistics and Actuarial Science, Simon Fraser University, Burnaby, British Columbia, Canada

John W. Glendening

Affiliation Salinas, California, United States of America

L. Joseph Burnett

Affiliation Ventana Wildlife Society, Salinas, California, United States of America

Daniel George

Affiliation Pinnacles National Park, National Park Service, Paicines, California, United States of America

Jesse Grantham

Affiliation California Condor Recovery Program, U.S. Fish and Wildlife Service, Ventura, California, United States of America

Competing Interests

The authors note that they received funding from Wildlife Encounters, Inc. but this does not alter their adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: JMJ SMH. Performed the experiments: JMJ JWG LJB DG. Analyzed the data: JWR JMJ CJS. Contributed reagents/materials/analysis tools: JWG CJS JMJ. Wrote the paper: JWR JMJ SMH CJS JWG LJB DG JG. Animal capture and handling: LJB DG.