? Duck

This "duck" used to swim around our area every day with a couple of Mallards. They didn't seem to mind too much, but is it a cross breed, a sport or what? - I have shown this in a photographic competition entitled "Snotty-Nosed Duck" - Lake Bafa Turkey
Ref:
Date:
27/03/08
Location:
Lake Bafa, Turkey
Photographer:
John Pell