Ключевые слова: back, beach, beak, beautiful, beauty, behavior, behaviour, bill, bird, birds, black headed gull, freshwater bird, lake, larus ridibundus, mate, mating, nature, nest, pair, pairing, plumage, reproduce, scenery, scenic, seabird, seashore, shore, spread wings, spring, summer, surf, surface, two, water, white, wild, wing, wings,