Ключевые слова: alone, animal, background, beak, bird, black, cable, change, concept, different, direction, discrimination, electric, element, feathers, flock, grey, group, horizontal, individual, individuality, innovation, isolated, line, natural, nature, nobody, perch, perched, perching, pigeon, power, rest, row, silhouette, sit, sky, symbol, telegraph, unique, urban, vertebrate, white, wild, wildlife, wire,