Ключевые слова: air, animal, beautiful, beauty, bird, birds, blue, clouds, dove, feather, feathers, flight, fly, flying, free, freedom, grace, green, group, high, hope, instinct, love, many, migration, move, natural, nature, ornithology, outdoor, peace, pigeon, pigeons, purity, roost, season, shape, silhouettes, sky, smooth, sunrise, sunset, symbol, tree, white, wildlife, wind, wing, wings,