Duck is the general name for waterfowl of the order Anseriformes, family Anatidae, subfamily Anatidae, and can be divided into wild ducks and domestic ducks. Wild ducks are relatively small in size and have short necks. They live on the water all year round and have strong diving abilities. They feed on small animals in the water (small fish, shrimps, etc.). Domestic ducks are larger than wild ducks and live in water or land, feeding on small animals (fish, shrimp, loaches, etc.) and plants (water plants, barnyard grass, rice, etc.) in the water. Different from swans and geese, ducks have the following characteristics: ducks are smaller, have shorter feathers, and have limited flight distance.
