Yellow-legged gull

The yellow-legged gull has only recently been recognised as a species in its own right, having previously been considered to be a race of herring gull. Adults have darker grey backs and wings than herring gulls, but are paler than lesser black-backed gulls. They have more black in the wing tips than herring gulls and smaller white 'mirrors'. The legs are bright yellow, there is a red ring around the eye and the bill is yellow with a large red spot. In non-breeding plumage, the head is less streaked and whiter than herring gulls.

Juvenile yellow-legged gulls are very similar to juvenile lesser black-backed gulls, but tend to be whiter-headed and start to gain a grey 'saddle' on their backs quickly as they moult to first winter plumage.

Immature birds gain adult-like characteristics as they mature over the course of five years with the legs turning yellow and dark grey feathers replacing the brown and black immature feathers.