Korner-Nievergelt, F. R. (2009) “Measuring within-winter movement rates of Tufted Duck Aythya fuligula and Common Pochard A. ferina based on ring re-encounter data”, Wildfowl, pp. 24–41. Available at: https://tidsskrift.dk/Wildfowl/article/view/153583 (Accessed: 16 December 2025).