1. Faculty of Education and Arts, Nord University, Levanger, Norway
2. Nature Guide, Rusnė, Lithuania
3. Polis University, Tirana, Albania
4. BirdLife Bulgaria, Sofia, Bulgaria
5. Institute of Biology, Lab of Ornithology, University of Latvia, Riga, Latvia
6. Ukrainian Department of FZS, Lviv, Ukraine
7. Leibniz Institute for the Analysis of Biodiversity Change, Hamburg, Germany
8. Bird Protection and Study Society of Serbia, Novi Sad, Serbia
9. Biom Association, Zagreb, Croatia