(Common) Eider
Somateria mollissima

Eider are normally marine ducks, but a particularly harsh winter in the Baltic caused some birds to migrate to Lake Neuchâtel a few years ago. Some stayed and are thought to be breeding. The two in this photo are females, the males being a striking black, white, pink and green.
 

(Common) Eider

1: Lac de Neuchâtel, 13/05/2007.