Possible Scaup at Leighton Moss

Possible Scaup at Leighton Moss

Observation - Possible Scaup at Leighton Moss. Description: Not entirely certain as to whether or not this is a Female Scaup. Someone has suggested that it may be a Tufted Duck or hybrid. However, there seems to be a little amount of black on the beak and it was on its own rather than with the Tufted Ducks. Any op

Not entirely certain as to whether or not this is a Female Scaup. Someone has suggested that it may be a Tufted Duck or hybrid. However, there seems to be a little amount of black on the beak and it was on its own rather than with the Tufted Ducks. Any opinions much appreciated.
Adam (aged 14)