Ключевые слова: activity, afternoon, animal, animal behavior, aquatic, avian, beauty, bird, calm, calmness, clear water, duck, duckling, ecosystem, elegance, enjoyment, environment, feathers, flapping, graceful, habitat, lake, landscape, natural, nature, outdoor, park, peaceful, pond, posture, reflection, relaxation, scene, scenic, serene, serene atmosphere, serenity, splash, summer, sun, sunlight, sunny day, swimming, water, waterfowl, wild, wildlife, wing movement, wingbeat, wings,