About the Authors
- Rebecca J. Safran, Matthew R. Wilkins, Joanna K. Hubbard, Julie Marling
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado, United States of America
- Kevin J. McGraw
- School of Life Sciences, Arizona State University, Tempe, Arizona, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: RJS. Performed the experiments: RJS MRW. Analyzed the data: RJS JKH JM. Contributed reagents/materials/analysis tools: RJS KJM JKH. Wrote the paper: RJS KJM. Detailed editing of the manuscript: KJM. Field data collection: MRW. Manuscript revisions: MRW. Extensive color data analysis: JKH. Extensive data collection on plumage coloration: JM.