Duck is a kind of poultry. Ducks are still real ducks. Ducks are smaller, with short necks, and some genera have bigger mouths. The legs are behind the body, so the gait is faltering. Unlike swans and geese, most real ducks have the following characteristics: males molt twice a year, females lay more eggs in each nest, and their eggshells are smooth; The legs are covered with overlapping scales; The cry shows some gender differences.

Three famous ducks in China: Gaoyou Duck, Beijing Duck and Shaoxing Duck. Gaoyou Duck is one of the three famous ducks in China with a history of 100 years. Because the stocking environment is mostly lake wetland, Gaoyou duck not only grows fast, has good meat quality and high egg laying rate, but also enjoys a high reputation at home and abroad for producing double yellow eggs or even triple yellow eggs. Beijing roast duck has a history of more than 400 years. In the early days, as the capital moved northward in the Ming Dynasty, water transportation was busy. The boatmen took the ducks to pick up the scattered rice and brought the small white ducks unique to the south to Beijing. Over time, the settled white duck became a kind of exclusive fattening meat duck. Beijing duck has white feathers, slightly milky luster, large and plump body, rectangular shape, uniform and elegant structure. The front is convex at an angle of about 30 ~ 40 degrees with the ground. The back is wide and flat, the chest is plump and prominent, the abdomen is plump and compact, the wings are small and close to the body, and the tail is blunt and slightly upturned.