After the initial excitement of what I thought was a Scaup when I first saw the bird amongst the group of Tufted Duck, I checked through various books I have and online.
Greater Scaup was begining to be ruled out. Was it a Lesser Scaup?
The number of dodgy pictures I had kept nudging me away from Greater, and nearer to Lesser.
The head colour for one, and the small 'peak' on the head.
The size didn't fit though.
Was it a hybrid? A cross between a Tufted and something else?
More checking with what I had at hand, and then I put a couple of pictures on Twitter.
After some scrutiny via the medium of Twitter, by others that are far better birders than myself, the general consensus came back that is was a hybrid.
A male, Tufted x Pochard.
A big thank you to all the people on Twitter that took the time to look and help out with the ID.
I think birds should wear name badges.