1. Department of Behavioral Ecology and Evolutionary Genetics, Max Planck Institute for Ornithology 82319 Seewiesen, Germany
2. School of Biological Sciences, University of East Anglia, Norwich NR4 7TU, United Kingdom
3. Department of Organismal Biology, Evolutionary Biology Centre, Science for Life Laboratory, Uppsala University SE-752 36 Uppsala, Sweden
4. Department of Genetics, University of Granada E-18071 Granada, Spain
5. Department of Biochemistry, Cell and Molecular Biology of Plants, Estación Experimental del Zaidín, Spanish National Research Council E-18008 Granada, Spain
6. Institute of Clinical Molecular Biology, Christian-Albrechts-Universität zu Kiel 24118 Kiel, Germany
7. Sequencing Core Facility, Max Planck Institute for Molecular Genetics 14195 Berlin, Germany
8. Department of Behavioral Neurobiology, Max Planck Institute for Ornithology 82319 Seewiesen, Germany
9. Division of Evolutionary Biology, Faculty of Biology, Ludwig Maximilian University of Munich D-82152 Planegg-Martinsried, Germany