Ключевые слова: animal, ardea cinerea, background, beak, beautiful, bird, bird watching, birdwatching, blue, conservation, feather, feathered, feathering, fishing, fly, gray heron, grey, heron, lake, migration, migratory, natural, nature, ornithology, plumage, protection, sky, water, waterbird, wild, wilderness, wildlife, wing, wings,