Ducks eat grains and vegetables, ducks are divided into mallard ducks and domestic ducks. Mallard ducks are relatively small in size and feed on small animals in the water (small fish, shrimp, etc.).

The domestic duck is relatively large compared to the mallard, to small animals (fish, shrimp, loach, etc.), plants (water plants, tares, rice, etc.) for food.

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

Expanded Information

All true ducks, with the exception of the bucks and sea ducks, are sexually mature within the first year and pair up only during the breeding season, unlike swans and geese, which are paired 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. 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 lose their migratory flightiness when they are domesticated by humans, and people don't let them stop laying to hold their eggs in order to get more eggs. Over time, domestic ducks have lost the ability to hatch eggs. Ducks have a 360-degree field of vision in their eyes, so they don't have to turn their heads to see behind them.