1. Department of Bird Migration Swiss Ornithological Institute Sempach Switzerland
2. Department of Migration Max Planck Institute for Animal Behavior Radolfzell Germany
3. Department of Civil, Environmental and Geodetic Engineering The Ohio State University Columbus Ohio USA
4. Centre for the Advanced Study of Collective Behaviour University of Konstanz Konstanz Germany
5. Department of Biology University of Konstanz Konstanz Germany
6. Migratory Bird Center Smithsonian Conservation Biology Institute Washington District of Columbia USA
7. Department of Coastal Systems, NIOZ, Royal Netherlands Institute for Sea Research Utrecht University Texel The Netherlands
8. Norwegian Polar Institute, Fram Centre, Tromsø, Norway, Department of Arctic and Marine Biology University of Tromsø – The Arctic University of Norway Tromsø Norway
9. Conservation Ecology Group, Groningen Institute for Evolutionary Life Sciences University of Groningen Groningen The Netherlands
10. Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark University of Copenhagen Copenhagen Denmark
11. Department of Vertebrate Zoology Lomonosov Moscow State University Moscow Russia
12. University of Manitoba Winnipeg Manitoba Canada
13. Point Blue Conservation Science Petaluma California USA
14. Australian Antarctic Division Kingston Tasmania Australia
15. Ecology and Evolutionary Biology Tulane University New Orleans Louisiana USA
16. Institute for Marine and Antarctic Studies University of Tasmania Hobart Tasmania Australia
17. Oklahoma Biological Survey University of Oklahoma Norman Oklahoma USA