1. Ecologie Systematique Evolution; CNRS; AgroParisTech; Université Paris-Saclay; Orsay Cedex France
2. Departamento de Zoología; Facultad de Biología; Universidad de Sevilla; Sevilla Spain
3. Laboratory of Ornithology; Cornell University; Ithaca NY USA
4. Laboratory of Ornithology; Department of Zoology; Palacky University; Olomouc Czech Republic
5. Evolutionary Ecology Group; Department of Biology; University of Antwerp; Antwerp Belgium
6. IEES-Paris - Institut d'Ecologie et des Sciences de l'Environnement; Sorbonne Universités; UPMC Univ Paris 06, UPEC; Paris France
7. Àrea de Biodiversitat; Grup de Biologia de la Conservació; Centre Tecnològic Forestal de Catalunya; Solsona Spain
8. Institute of Environmental Sciences; Jagiellonian University; Krakow Poland
9. CNRS; Laboratoire de Biométrie et Biologie Evolutive; UMR 5558; Université Lyon 1, Université de Lyon; Villeurbanne Cedex France
10. Museum and Institute of Zoology; Polish Academy of Sciences; Warsaw Poland
11. Department of Biology; Behavioural Ecology & Ecophysiology Group; Campus Drie Eiken; Antwerp Belgium
12. Department of Biology; University of Turku; Turku Finland
13. Department of Natural and Social Sciences; University of Gloucestershire; Cheltenham UK
14. Department of Zoology; Edward Grey Institute of Field Ornithology & Institute of Human Sciences; Oxford UK
15. Department of Animal Ecology; Evolutionary Biolpgy Centre; Uppsala University; Uppsala Sweden
16. Laboratoire Évolution & Diversité Biologique; UPS Toulouse III; Toulouse France
17. CEH Wallingford; Wallingford UK
18. Station d'Ecologie Expérimentale du CNRS à Moulis; USR CNRS 2936; Moulis France
19. Institute of Ecology of Nature Research Centre; Vilnius Lithuania
20. Section of Ecology; Department of Biology; University of Turku; Turku Finland
21. Fleurey-sur-Ouche France
22. Department of Agricultural, Food and Forest Sciences; Università di Palermo; Palermo Italy
23. Institute of Biodiversity, Animal Health & Comparative Medicine; University of Glasgow; Glasgow UK
24. Department of Biology, Evolutionary Ecology; Lund University; Lund Sweden
25. Department of Biology, Biodiversity; Lund University; Lund Sweden
26. Department of Life Sciences; Faculty of Sciences and Technology; MARE - Marine and Environmental Sciences Centre; University of Coimbra; Coimbra Portugal
27. Faculty of Social Sciences; Didactica Research Group; University of Antwerp; Antwerp Belgium
28. Evolutionary Ecology Group (GIBE); Faculty of Sciences; University of A Coruña; A Coruña Spain
29. Evolutionary Ecology Group (EVECO); Department of Biology; University of Antwerp; Antwerp Belgium
30. Luontotutkimus Solonen Oy; Helsinki Finland
31. ISPRA; Rome Italy
32. Netherlands Institute of Ecology (NIOO-KNAW); Wageningen The Netherlands
33. Centre d'Ecologie Fonctionnelle et Evolutive; CEFE UMR 5175; Montpellier Cedex 5 France