Bird was showing well this morning and managed to get a few more photos for the record. Nice to get a couple with the Ring-necked in the same frame as the Lesser Scaup.
A couple of thoughts as I don't know much about Ring-necked Ducks:
Bill appears very long and the bill/forehead line very straight
Should there be vermiculated grey flank feathers?
Brilliant find Gareth - thanks very much.
*Additional photos from this afternoon added below showing wing bar and bird in better light.
With Tufted and Pochard
With the Lesser Scaup