Rees, Eileen C., Sonia Rozenfeld, Didier Vangeluwe, Panagiotis Ioannidis, Kiraz Erciyas-Yavuz, Anna Belousova, Eldar Rustamov, et al. “International Census and Population Trends for Bewick’s Swans Cygnus Columbianus Bewickii Wintering from the East Mediterranean to Central Asia”. Wildfowl (November 14, 2024): 179–201. Accessed December 16, 2025. https://tidsskrift.dk/Wildfowl/article/view/156361.