1. Milner Centre for Evolution, Department of Biology and Biochemistry; University of Bath; Bath BA2 7AY United Kingdom
2. Organisms and Environment Division, Cardiff School of Biosciences; Cardiff University; Cardiff CF10 3AX United Kingdom
3. NERC-Biomolecular Analysis Facility, Department of Animal and Plant Sciences; University of Sheffield; Western Bank Sheffield S10 2TN United Kingdom
4. Institut Supérieur de technologie de Menabe Morondava, Faculty of Sciences; University of Toliara; Madagascar
5. U.S. Geological Survey; Forest and Rangeland Ecosystem Science Center; Corvallis Oregon 97331 USA
6. U.S. Geological Survey; Fort Collins Science Center; Fort Collins Colorado 80526 USA
7. Department of Biological and Environmental Sciences; University of Gothenburg; Gothenburg 40530 Sweden
8. Institute of Zoology; Universitätsplatz 2 8010 Graz Austria
9. Max Planck Institute for Ornithology; Eberhard Gwinner Str. 82319 Seewiesen Germany