Black-headed Gull, adult, Dungeness, Kent, 9/04/2017Black-headed Gull, 2nd cy Dungeness, Kent, 9/04/2017Black-headed Gull, adult, Dungeness, Kent, 5/03/2017Black-headed Gull, 1st winter, Southend, Essex, 18/02/2017Black-headed Gull, adult, Dungeness, Kent, 4/02/2017Black-headed Gull, adult, Dungeness, Kent, 4/02/2017Black-headed Gull, adult, Dungeness, Kent, 4/02/2017Black-headed Gull, 1st winter, Kalba Beach, UAE, Feb, 2016Black-headed Gull, adult winter, Kalba Beach, UAE, Feb, 2016Black-headed Gull, adult winter, Kalba Beach, UAE, Feb, 2016Black-headed Gull, adult winter, Dungeness, Kent, 16/1/2016Black-headed Gull, adult wBlack-headed Gull, adult wBlack-headed Gull, 1st summer, Dungeness, Kent, 28/6/2015Black-headed Gull, 1st summer, Dungeness, Kent, 28/6/2015Black-headed Gull, adult wBlack-headed Gull, adult wBlack-headed Gull, adult w