Ключевые слова: air, animal, autumn, background, beauty, bird, birds, blue, clouds, cloudy, common, crane, cranes, day, environment, flight, flock, fly, flying, formation, free, freedom, geese, grey, group, grus, high, many, migrating, migration, migratory, nature, outdoor, overcast, sky, spring, waterfowl, white, wild, wildlife, wings,