Fox, Anthony D., A. Caizergues, M. V. Banik, K. Devos, M. Dvorak, M. Ellermaa, B. Folliot, et al. “Recent Changes in the Abundance of Common Pochard Aythya Ferina Breeding in Europe”. Wildfowl (November 29, 2016): 22–40. Accessed December 16, 2025. https://tidsskrift.dk/Wildfowl/article/view/153684.