Human beings, in accordance with certain economic purposes, after a long period of domestication and selection of cultivation into three kinds of breeds for three purposes, namely: meat type, egg type and part-time use of three types.

1, meat type

The representative ones are: Pekin duck, Cherry Valley duck, Dikko duck, duck, Tianfu meat duck.

2, egg type

There are Shaoxing ducks, Jinding ducks, Youxian ducks, Jiangnan No. 1, Jiangnan No. 2, Kaki-Combell ducks and so on.

3, dual-purpose

There are Gaoyou ducks, Jianchang ducks, Chaohu ducks, Guixi ducks and so on.

Expanded

Duck appearance and habits:

Appearance: Duck is a duck duck subfamily of geese ducks collectively known as ducks, ducks, domestic ducks. Mallard ducks are relatively small in size, short neck, live on the water surface all year round, strong diving ability, to small animals in the water (small fish, shrimp, etc.) for food.

The domestic duck is relatively large compared to the mallard, living in the water or on land, depending on small animals in the water (fish, shrimp, loach, etc.), plants (water plants, tares, rice, etc.) for food. Unlike swans and geese, ducks have the following characteristics: smaller body size, shorter feathers, and limited flight distance.

Habitat: Ducks are small, with short feathers and limited flight distance. All ducks, which are sexually mature within the first year, pair up only during the breeding season, unlike swans and geese, which mature later and pair up for life. According to their characteristic behavior, ducks can be divided into three main groups: drilling ducks, diving ducks and perching ducks. The mallard is a typical water-drilling duck and is the ancestor of most domestic ducks.

The perching ducks, such as the moscow duck, have long claws and are the most arboreal ducks. Diving ducks (including marine) are the most diverse. Mallards fly from the south to the north in the spring to lay their eggs, then fly south again in the fall to overwinter. They lost their migratory flightiness when they were domesticated by humans. The duck's eyes have a 360-degree field of vision, so you can see behind you without turning your head.

Baidu Encyclopedia - Ducks