Ключевые слова: action, active, animals, arctic, avian, back light, backlight, backlit, birds, bright, common, crimson, dawn, dusk, fauna, feathery, flight, flit, flutter, fly, golden, habitat, hirundo, ladoga, lake, life, light, natural, nature, red, river, seabird, seabirds, seagulls, silhouettes, sky, spreading, sterna, sterna hirundo, summer, sun, sunlight, sunrise, sunset, terns, wild, wilderness, wildlife, wings, yellow,