Tufted Duck
Aythya fuligula
Tufted ducks are found on ponds and lakes and are fairly common. The first four are males, the last two are females.
 
  
  
  
1: Elfenau Nature Reserve, Bern, 12/05/2007.
3-4: Thun,15/02/2009.
2,5-6: Biel/Bienne, 13/04/2007.