Cormorant fishing: 1 day can catch 20 Jin of fish, which has been circulated for thousands of years. Why was it suddenly banned?

In recent years, with the strengthening of people's awareness of environmental protection and the improvement of national laws and regulations, many fishing methods have been banned, such as electric fish, fried fish, homeless nets and visible anchor fish. These methods will cause great damage to the ecological environment of water bodies, and many people will take the initiative to report when they see them.

In fact, there is a traditional way of fishing, which has been popular for thousands of years and has now been banned. This is cormorant fishing.

I believe many people are familiar with it. After all, for a long time, the background picture of RMB 20 is a picture of Guilin fishermen fishing with cormorants.

In fact, as an expert in fishing, cormorants can't taste fish all their lives.

Then some people wonder why cormorant fishing is so traditional and environmentally friendly. Just too good at catching fish?

0 1, Introduction to Cormorant

Cormorants, commonly known as osprey, look like a "black duck" from a distance, so they are also called "old water ducks". However, it is a large swimming bird with a fierce temperament, a sharp and long mouth, a slender and powerful neck and flexible rotation. Once the target is found, it can be hunted in a short time, and the barb on the mouth can be used to stab the skin of the fish, thus completing the hunting task.

There are five species of cormorants in China, among which the northern population will migrate to the south of the Yellow River and the Yangtze River in winter.

It generally lives near rivers, lakes, reservoirs, islands and swamps, and nests with algae and leaves.

In fact, cormorants have always been a symbol of a beautiful marriage in ancient times, and the "pheasant dove" in Guan Guan pheasant dove in the river continent is considered as a cormorant.

Generally speaking, cormorants always cooperate with each other from mating to hatching, and then to feeding young birds, and never separate.

April-June is the breeding season every year, and 3-5 eggs can be laid at a time. After feeding for 2 months, young birds can fly to nest and mature sexually in about 3 years.

Although the cormorant is relatively large, it not only has strong diving ability, but also has super flying ability. Nest in tall trees near the water in summer and in caves or shelters in winter.

When the cormorant swims, its neck is straight forward and its head is slightly tilted; When diving, you first emerge from half of your body and then turn over and dive into the water.

Cormorants can dive underwater for 28 seconds and at the same time can dive to a depth of six meters.

When perching, cormorants will stand on stones or stumps, flap their wings quickly, and then fly far away after their feathers dry.

You can fish in A Jin for 20 days.

Cormorants are famous for their big stomachs. Its rectum is very short, so it is difficult to store feces, so food will be digested and excreted soon after eating it.

In addition, cormorants are particularly elastic and can accelerate the softening of food.

Studies have found that parasites in cormorants' stomachs can also secrete auxiliary digestive enzymes, and then decompose food, thus strengthening cormorants' digestive ability again.

However, God has endowed cormorants with strong digestive ability and high-precision fishing performance.

Cormorants are called "niggers" and describe their superb fishing skills. It travels very fast downstream of the water. After seeing the target fish, it can catch up with it and catch it in a short time.

Although water is a paradise for fish, cormorants swim much faster in water than fish because of its unique shape and webbed toes.

Most importantly, cormorants know how to work as a team. They can catch fish together, and the caught fish will be stored in the throat bag.

When encountering a big fish of more than ten catties, the cormorants will cooperate with Qi Xin to catch it.

It is found that cormorants can catch 20 kilograms of fish a day, and five cormorants work together to catch up to 100 kilograms of fish that day.

Because of its excellent fishing ability, cormorants were domesticated as early as the Neolithic Age, and the cormorant fishing method became popular in the Tang and Song Dynasties.

Every spring, autumn and winter, there are always some people fishing with cormorants.

In order to make cormorants fish more, fishermen will put a condom around cormorants' necks to prevent them from swallowing fish, otherwise they will not fish again after they are full.

Every time fishing, fishermen will put cormorants on the boat. After finding the fish, the fishermen will give orders. After hearing the whistle, the cormorant will jump into the water to fish.

In the water, cormorants don't find their prey by vision, but by hearing, locking their prey like radar, thus achieving a hundred shots.

After the fish was caught, the cormorant could not swallow the fish, so it had to go back to the boat and spit it out to continue fishing.

After fishing, fishermen will reward cormorants for their achievements.

Sadly, although the cormorant is the king with a big stomach, it never chews. Eating fish is like drinking water, and you never know the taste of fish all your life.

03. Why is cormorant fishing banned?

The cormorant fishing method is very popular in ancient times because of its high efficiency and high speed, but its food intake is also relatively large, and it can eat 25-30% of its body weight in one day, about 3 kg.

However, cormorants are now banned from fishing in some waters, mainly because cormorants eat all kinds of fish and are "childless" like electric fish, and those professional fishermen can catch hundreds of cormorants at a time, which will sweep up the whole water area, which is extremely unfavorable to water ecology.

At the same time, cormorants can't tell which are protected fish. Once these fish are caught, even if the fishermen release them afterwards, they cannot survive.

Most importantly, cormorants have been listed as "three-owned" protected animals, and private breeding is prohibited. Therefore, the cormorant fishing method is gradually being eliminated. what do you think?