Dalby, Lars, Pär Söderquist, Thomas K. Christensen, Preben Clausen, Árni Einarsson, Johan Elmberg, Anthony D. Fox, Niklas Holmqvist, Tom Langendoen, Aleksi Lehikoinen, Åke Lindström, Svein-Håkon Lorentsen, Leif Nilsson, Hannu Pöysä, Jukka Rintala, and Arnór Þ. Sigfússon. “The Status of the Nordic Populations of the Mallard (Anas Platyrhynchos) in a Changing World”. Ornis Fennica 90, no. 1 (March 31, 2013): 2–15. Accessed May 11, 2024. https://ornisfennica.journal.fi/article/view/133817.