Mouronval, Jean-Baptiste, Matthieu Guillemain, Aurelien Canny, and Frederik Poirier. “Diet of Non-Breeding Wildfowl Anatidae and Coot Fulica Atra on the Perthois Gravel Pits, Northeast France”. Wildfowl (April 16, 2013): 68–97. Accessed December 16, 2025. https://tidsskrift.dk/Wildfowl/article/view/153873.