As it was, there was a bit of a clear out, with no sign of the previous day's Shovelers or Tufted Ducks. The female Goosander, however remained and there were a handful of vocal Siskin near to the entrance. There were also plenty of recent signs of Otters with both very fresh prints and spraints under the railway bridge.
I popped up again on my lunch break for a quick look. On arrival, I enjoyed an entertaining tussle overhead between a very territorial Lesser Black Backed Gull & a passing Buzzard.
There were noticeably more gulls about on the reservoir with good numbers of both Black-Headed & Commons. It was while scanning through these that I picked up the back of the distinctive black hood of an adult Mediterranean Gull. It went on to show nicely for a little while until I had to get back to work. Mike Pollard also managed to see the bird soon after for a short while, before it then unfortunately disappeared.
Roger Wyatt also visited today and saw a Curlew flying over and two Willow Tits. He posted some fantastic photos on the Oxon Birding Blog.