Guillemain, M.; Champagnon, J.; Massez, G.; Pernollet, C. A.; George, T.; Momerency, A.; Simon, G. Becoming More Sedentary? Changes in Recovery Positions of Mallard Anas Platyrhynchos Ringed in the Camargue, France, over the Last 50 Years. Wildfowl 2015, 51-63.