Ключевые слова: animal, avian, background, beak, bird, black, blackbird, blue, branch, clever, closeup, common, corax, corvid, corvus, crow, dark, eye, fauna, feather, flight, flying, forest, frost, green, isolated, landing, looking, natural, nature, northern, ornithology, pair, perch, perched, plumage, raven, rook, sitting, sky, snow, symbol, tree, tree branch, white, wild, wildlife, wing, winter, wise,