A new duck for me! Reviewing my photos from the RSPB Rye Meads reserve it took me a while to figure out what type of duck was captured in this long distance shot. I initially thought it was a Ruddy duck, but the head just isn't even nearly right and it doesn't have a cocked tail. I finally figured out that it's a female Scaup and hence fairly rare. Certainly it was new to me so I'm glad I went back and looked carefully.
Here's an artier shot of the same bird with the evocative tall reeds of Rye Meads behind it.

What an exciting sighting! It’s a pretty bird.