close up swimming floating foraging juvenile great black-backed gull, larus marinus, in juvenile plumage

anodonta cygnea great blackbacked gull laridae larus marinus swan mussel animal aquatic plants avian background beak beautiful bird birds birdwatching close cute emerged environment feather floating food foraging habitat juvenile plumage lake natural nature nice ornithology outdoor outdoors pond pool reed seagull shallow water spotted sunlight sunrise swim warm light white wild wildlife wrinkles