Black-headed Gull ~ Ad. W ~ Dungeness, KentBlack-headed Gull ~ Ad. W ~ Dungeness, KentBlack-headed Gull ~ Ad. W ~ Dungeness, KentBlack-headed Gull ~ Ad. W ~ Southend Pier, EssexBlack-headed Gull ~ Ad. W ~ Southend Pier, EssexBlack-headed Gull ~ Ad. W ~ Southend Pier, EssexBlack-headed Gull ~ Ad. W ~ Dungeness, KentBlack-headed Gull ~ Ad. W ~ Dungeness, KentBlack-headed Gull ~ Ad. W ~ Dungeness, Kent