Black duck

Black duck

Observation - Black duck - UK and Ireland. Description: I would like to identify the black duck to the left of the Tufted ducks. It's bill seems to rise higher on its face and it appears slimmer. It is also darker than the other females.

I would like to identify the black duck to the far left of the Tufted ducks. It's bill seems to rise higher on its face, it appears slimmer, and does not seem to have a tuft. It is also darker than the other females.