Leucistic Mallard?

Can anyone tell me whether this is a leucistic Mallard or a Mallard cross? Or if neither, what is it?

  • Looks like a farmyard duck which may have a bit of Mallard in its genes. Most of our domestic  ducks are probably derived from wild Mallard in times  past and often  those genes show through. I used to visit country  shows a lot and it was interesting  to  see  the many Mallard related  species on show.