@hashygeek The Mediterranean Gull is slightly larger than a Black-headed Gull, with an all-black head in the breeding season. Adults have white wing-tips and underwings and the younger birds have more wing markings. It has a large, slightly drooping beak, bright red in adults. A very rare UK bird until the 1950s, it's now widespread in winter and breeding in ever-increasing numbers. Its present UK breeding population makes it an Amber List species. It is a Schedule 1 listed bird of The Wildlife and Countryside Act.