Animal, Human, Person, Mallard, Waterfowl, Duck, Teal, Clothing, Apparel, Helmet, Flying, above, animal, aquatic, asian, avian, background, beak, beihai, beihai ducks, beihai lake, beihai park, beijing, beijing duck, bif, bird, bird in flight, birds, china, chinese, color, colorful, colorful feathers, duck, ducks, elegant, fauna, feather, feather details, feathers, female, female mallard duck, flight, galericulata, graceful, lake, mallard, mallard duck, motion, natural, nature, ornithology, outdoor, outdoors, park, wild, wildlife, wing, wing span, wings, xicheng district, running away, national capital, plant, sinitic, seat, achiever, escape, zoology, passage, discipline, city, district, implementation, life science, writing, outside, music, capital, biology, means, urban area, mouth, asian country, orifice, center, aquatic bird, science, life, sino-tibetan, person, waterfowl