Ключевые слова: alert, alone, anas platyrhynchos, animal, animals in the wild, aves, avian, bird, brown, creature, day, daytime, differential focus, duck, environment, feathers, green head, habitat, lake, mallard, natural, nature, nobody, one, outdoors, outside, pond, portrait, profile, river, selective focus, side view, square, swimming, tan, water, waterfowl, wild, wildlife, wings,