black-headed gulls, chroicocephalus ridibundus, in winter plumage, squark perched on fence posts

animal background beak bird birds black headed gull blackheaded chroicocephalus ridibundus coast environment fauna feather feathers fence flight flock flying gulls habitat isolated lake larus migratory nature ornithology outdoors perched plumage pond post reeds sea seabird seagull seagulls seaside summer water wild wildlife wing wings winter