A Caspian Gull lookalike, while also managing to be reminiscent of a 2nd-w Ring-Billed Gull. Suggesting Caspian are the extensive black subterminal band on P5, dark eye, grey starting to 'eat into' black primaries - perhaps more so on right wing, extensive grey adult-type wing coverts and mainly white head. Suggesting Herring is the thick, short-looking bill, large eye, faint streaks on head and short-looking tibia. Polish intergrade?
Shot showing slight variations in apperance of Canada Geese. The front bird in particular (of which there was a second similar-looking bird present) showsa narrower white band on face, slightly darker upper breast, a slightly smaller size and a stubbier bill.
Idealyc: a throng of large gulls scrumming it out for space on the water at Linton Lane NR. Gulls using the tip at Ellington bathe at this Northumberland Wildlife Trust reserve.