Ключевые слова: abstract, adult, anas, anas platyrhynchus, animal, animals, autumn, autumn leaves, autumn river, avian, background, beak, beautiful, beauty, bird, bird watching, birds, blue, bright, calm, color, colorful, colourful, duck, ducks, evening, feather, golden, lake, liquid, male, mallard, natural, nature, orange, outdoors, outside, pond, reflection, reflective, ripple, river, sun down, sunlight, sunset, tranquil, water,