Slender-billed Gull in Sussex: a bird new to Britain

O N 19TH J U N E i 9 6 0 , at the sewage outlet in the sea off Langney Point, Sussex, I saw among Black-headed Gulls (Larus ridibundus) an immature gull of about the same size as these but with a markedly longer bill. O n this occasion the bird was seen only quite briefly and no other details were recorded, my attention being focused on the remarkable bill. On 22nd June 1960, however, I saw the bi...