About the Authors

Irene Keller

To whom correspondence should be addressed. E-mail: irene.keller@vogelwarte.ch

Address ¤ Current address: Schweizerische Vogelwarte Sempach, Sempach, Switzerland

Affiliation School of Biological and Chemical Sciences, Queen Mary, University of London, London, United Kingdom

Douda Bensasson

Affiliation School of Biological Sciences, The University of Manchester, Manchester, United Kingdom

Richard A Nichols

Affiliation School of Biological and Chemical Sciences, Queen Mary, University of London, London, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

IK and DB conceived, designed, and performed the experiments. IK, DB, and RAN analysed the data. DB contributed reagents/materials/analysis tools. IK and RAN wrote the paper.