Female Mallard?

Female Mallard?

Observation - Female Mallard? - UK and Ireland. Description: Saw this white duck with 2 Mallard males and 1 Mallard female. I assume it is a Mallard because, besides its body and beak shape, it behaved similar to the other 3 ducks (it did upend its tail like the others but I didn't catch the moment in the photos).

Saw this white duck with 2 Mallard males and 1 Mallard female. I assume it is a Mallard because, besides its body and beak shape, it behaved similar to the other 3 ducks (it did upend its tail like the others but I didn't catch the moment in the photos). I assume it is a female because and when the female Mallard followed one male when the males swam away from each other the white duck followed the other male.