About the Authors
- Manfred Gahr
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* E-mail: gahr@orn.mpg.de
Affiliation Max Planck Institute for Ornithology, Seewiesen, Germany
- Reinhold Metzdorf
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Affiliation Max Planck Institute for Ornithology, Seewiesen, Germany
- Dieter Schmidl
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Affiliation Max Planck Institute for Ornithology, Seewiesen, Germany
- Wolfgang Wickler
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Affiliation Max Planck Institute for Ornithology, Seewiesen, Germany
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: MG. Performed the experiments: RM DS. Analyzed the data: RM. Contributed reagents/materials/analysis tools: DS WW. Wrote the paper: MG.