Great-black-backed Gull
From the hide this morning, a fairly obvious juv. Great Black-back was visible, with some smaller gulls.
The one on the right of the photo I thought at first might be a Med Gull, but I wonder if it's just a small Lesser Black-back and the sheer size of the GBB is dwarfing it?
A redshank was on the reserve, but flew off shortly after arrivng.