This group of mallards are hybrids. Two, or possibly three, are Mallard, Muscovy crosses. What are the black feathered birds?
No interactions present.
All of the ducks in this photo are domestic Mallards (3 are definitely males, with curly central tail feathers, and the other two look like females females). There is nothing to suggest that any of them contain genes from other species.
The black ones are a male (on the left), and probably a female.
Lat/Lng: 51.7463, -2.3025
OS grid ref: SO792053