1.
Beekman JH, van Eerden MR, Dirksen S. Bewick’s Swan Cygnus columbianus bewickii utilising the changing resource of Potamogeton pectinatus during autumn in the Netherlands. Wildfowl [Internet]. 2013 Apr. 16 [cited 2025 Dec. 17];:238-4. Available from: https://tidsskrift.dk/Wildfowl/article/view/154977