Ключевые слова: adult, animal, avian, background, beautiful, bird, birdlife, birdwatching, brown, color, common, cute, day, daytime, environment, european, fauna, feather, gray, luscinia, male, megarhynchos, nature, nightingale, one, ornithology, ornithoscopy, outdoors, passerine, portrait, sing, single, sitting, small, song, songbird, spring, summer, summertime, tree, trunk, watching, wild, wildlife,