About the Authors
- John P. Swaddle
- National Center for Ecological Analysis and Synthesis, University of California Santa Barbara, Santa Barbara, California, United States of America
- John P. Swaddle, Stavros E. Calos
- Institute of Integrative Bird Behavior Studies, Biology Department, College of William and Mary, Williamsburg, Virginia, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JS. Performed the experiments: JS SC. Analyzed the data: JS SC. Contributed reagents/materials/analysis tools: JS. Wrote the paper: JS SC.