Llys-y-fran

Massive but very late forming gull roost with wave upon wave of birds coming in from the south between 3.45-4.30pm. Seemed to be equal numbers of BH gulls and LBB's with a dozen Commons, perhaps 4000 birds. The Ring-billed gull and the 2nd CY Yellow-legged gull were still present. As the other night they were very nervous with all lifting off and moving further up the reservoir a couple of times, I suspect these two may have had something to do with it!