Heeft de korfmossel Corbicula ook predators in de Rijn? III (kuif)eenden

Faeces collected along the Rhine near Wageningen, the Netherlands, consisted completely of shellfragments of Corbicula. These faeces, very similar to that of the Eider (Somateria mollissima) a shell-crushing duck in the Wadden Sea, were probably produced by the Tufted duck ( Aythya fuligula). From the thickness of the shellfragments in the hinge-area it could be concluded that this predator had crushed adult Corbicula-specimens of between 10 and 30 mm length. A few entire, juvenile, unbroken specimens of 4-5 mm length were also collected from the faeces.