Ключевые слова: 2, alone, animal, background, barn swallow, beak, bird, black, blue, breasted, cable, colours, danger, electric wires, electricity, energy, environment, equipment, fauna, feather, flight, fly, green, high, industrial, kingfisher, line, nature, perched, phone, pigeon, pole, power, roller, silhouette, sky, sky background, spring, technology, tree, tree branch, voltage, wild, wildlife, wire,