Ключевые слова: abstract, air, animal, background, beautiful, beauty, bird, birds, black, blue, climate, cloud, clouds, cloudscape, cloudy, day, environment, feather, flight, flock, flock of birds, fly, flying birds, freedom, gray sky, group, heaven, light, many, meteorology, migration, natural, nature, outdoor, scene, silhouette, silhouettes, sky, white, wild, wildlife, wing, wings,