1. Inst. of Vertebrate Biology; Academy of Sciences of the Czech Republic; Brno Czech Rep
2. Dept of Biology; Centre for Animal Movement Research, Lund Univ.; Ecology Building Lund Sweden
3. Center for Biodiversity Dynamics, Dept of Biology; Norwegian Univ. of Science and Technology; Trondheim Norway
4. Inst. of Biodiversity and Ecosystem Research; Bulgarian Academy of Sciences; Sofia Bulgaria
5. Dept of Bird Migration; Swiss Ornithological Inst.; Sempach Switzerland
6. Bird Monitoring Unit; SEO/BirdLife Madrid Spain
7. Dept of Biology; Faculty of Arts and Sciences, Univ. of Ondokuz Mayıs; Samsun Turkey