Ключевые слова: adult, animal, avian, background, beautiful, bird, birding, birdwatching, branch, closeup, common, cuckoo, cuculus, cute, day, environment, european, fauna, feather, forest, gray, green, grey, habitat, natural, nature, one, ornithology, ornithoscopy, outdoors, perching, plumage, portrait, rain, rainy, single, sit, songbird, spring, springtime, summer, tail, tree, twig, watching, wild, wildlife, wings,