About the Authors
- Craig R. White
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Affiliation Centre for Ornithology, School of Biosciences, The University of Birmingham, Birmingham, United Kingdom
- Norman Day
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Affiliation Centre for Ornithology, School of Biosciences, The University of Birmingham, Birmingham, United Kingdom
- Patrick J. Butler
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Affiliation Centre for Ornithology, School of Biosciences, The University of Birmingham, Birmingham, United Kingdom
- Graham R. Martin
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*To whom correspondence should be addressed. E-mail: g.r.martin@bham.ac.uk
Affiliation Centre for Ornithology, School of Biosciences, The University of Birmingham, Birmingham, United Kingdom
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: CW PB GM. Performed the experiments: CW GM ND. Analyzed the data: CW. Wrote the paper: CW PB GM ND.