1st, bird, birds, british, coast, coastal, fence, first, gull, gulls, horizontal, landscape, larus, marine, perch, perched, perching, plumage, post, sat, sea, seabird, seabirds, seashore, shore, sit, sitting, stand, standing, stood, winter, wood, wooden, moult, moulting, juvenile, young, Black-headed Gull, Larus ridibundus