1. Natural History Museum Bern CH‐3005 Switzerland
2. Institute of Ecology and Evolution University of Bern Bern CH‐3012 Switzerland
3. Schweizerische Vogelwarte Sempach CH‐6204 Switzerland
4. Laboratories of Analytical Biology National Museum of Natural History Smithsonian Institution Washington DC 20560 USA
5. Evolutionary Ecology Group (EVECO) University of Antwerp Wilrijk 2610 Belgium
6. Department of Biology of Organisms and Systems (BOS) Zoology Unit University of Oviedo Catedrático Rodrigo Uría s/n Oviedo ES‐33071 Spain
7. Division of Vertebrate Zoology Peabody Museum of Natural History Yale University New Haven CT 06520 USA
8. Chair of Zoology Yerevan State University Yerevan 0043 Armenia
9. Department of Biology and Inland Waters Protection, Institute for multidisciplinary research University of Belgrade Belgrade 11030 Serbia