1. Dept of Arctic and Marine Biology; UiT The Arctic Univ. of Norway; Tromsø Norway
2. CNRS-UMR 5558; Univ. Claude-Bernard; Lyon France
3. Dept of Biology; Williams College; Williamstown MA USA
4. Inst of Avian Research ‘Vogelwarte Helgoland’; Wilhelmshaven Germany
5. Inst. for Biodiversity and Ecosystem Dynamics; Univ. of Amsterdam; Amsterdam the Netherlands
6. Dépt de biologie; Univ. de Sherbrooke; Sherbrooke QC Canada
7. Station d’Ecologie Théorique et Expérimentale du CNRS; Moulis France
8. CEFE UMR 5175; CNRS, Univ. de Montpellier, Univ. Paul-Valéry Montpellier; Montpellier France
9. Psychology, Faculty of Natural Sciences; Univ. of Stirling; Stirling UK
10. Max-Planck Odense Centre on the Biodemography of Aging, and Dept of Biology; Odense Denmark
11. Groningen Inst. for Evolutionary Life Sciences; Univ. of Groningen; Groningen the Netherlands
12. Dept of Biosciences; Univ. of Oslo; Norway