Larus fuscus graellsii
This gorgeous gull was one of three or four that seem resident around where I live. I suspect that some of them may nest up on a roof opposite – at ay rate they have something against me even though I love them, for they dive down and sort of mob me. They are intelligent birds and recognize people after a fashion so perhaps someone who looks like me upset them at some point. Lesser Black Backed Gulls are a slate grey in the British Isles, but look very similar to their congeners the Larus argentatus.