Herring x Lesser Black-backed Gull, Fulham, 15 January 2017
I decided to join the WWT this weekend, primarily so that I can have regular access to the London Wetland Centre. My first visit, in the rain on Sunday afternoon, produced the same first-winter Caspian Gull I saw on the Thames last week (I suspect it's spending most of its time in the immediate area) from Peacock Tower as well as singles of Bittern, Water Pipit and Jack Snipe - the latter was often swimming around in the open, quite strangely. Other notable local birds included a drake Pintail and male Stonechat.
First-winter Caspian Gull, London Wetland Centre, 15 January 2017