1. Behavioral Ecology and Sociobiology Unit, German Primate Center – Leibniz Institute of Primatology Kellnerweg 4 37077 Göttingen Germany
2. Department of Sociobiology/Anthropology University of Göttingen Kellnerweg 6 37077 Göttingen Germany
3. Department of Ecological Dynamics Leibniz Institute for Zoo and Wildlife Research Alfred‐Kowalke‐Strasse 17 D‐10315 Berlin Germany
4. Department of Biological and Environmental Science Ambiotica, University of Jyväskylä PO Box 35 40014 Jyväskylä Finland
5. Department of Evolutionary Ecology Leibniz Institute for Zoo and Wildlife Research Alfred‐Kowalke‐Strasse 17 D‐10315 Berlin Germany
6. Division of Ecology & Evolution, Research School of Biology ANU College of Science, The Australian National University RN Robertson Building, 46 Sullivans Creek Road Canberra ACT 2600 Australia
7. Department of Behavioural Biology University of Münster Badestr. 13 48149 Münster Germany
8. Department of Animal Behavior Bielefeld University Morgenbreede 45 33615 Bielefeld Germany
9. Department of Biology, Institute of Zoology Universität Hamburg Martin‐Luther‐King Platz 3 20146 Hamburg Germany
10. Department of Biology II Ludwig Maximilians University of Munich Großhaderner Str 2 82152 Planegg‐Martinsried Germany
11. Applied Zoology and Nature Conservation University of Greifswald Loitzer Str. 26 17489 Greifswald Germany
12. Department of Behavioural Neurobiology Max Planck Institute for Ornithology Eberhard‐Gwinner‐Str. 6a D‐82319 Seewiesen Germany