Metropolis: My Extinction Zoo

How did the bald eagle become extinct?

To be honest, most netizens know that bald eagles are extinct.

But it is also unclear exactly why it became extinct.

Just like in the previous life, many people will not know the cause of the extinction of other animals.

But.

There is one sentence that is universal.

“The extinction of the bald eagle must be due to man-made reasons!”

“Either humans hunt or destroy the environment.”

Looking at the house manager’s ‘autumn wind that year’ spoke again.

Wang Yifan nodded slightly.

“The extinction of bald eagles is indeed caused by humans.”

“However, the reason is quite bizarre!”

By this time, four bald eagle eggs had been found.

Wang Yifan was determined in his heart.

He continued to explain to the screen.

“In the 50s of the last century, in order to increase agricultural production, the América country used a pesticide called DDT in large quantities!”

“This insecticide is toxic and difficult to degrade.”

“With the irrigation of the cultivation, DDT quietly penetrates from the soil to the major rivers, and then enriches it in the fish in the water.”

“These poisonous fish are constantly hunted by bald eagles, and toxins accumulate in the body of sea eagles little by little.”

“However, with its strong self-cleaning ability, DDT has minimal damage to the adults of bald eagles.”

“However, it will make the eggshell it lays extremely soft and brittle!”

“The slightest touch will break the eggshell!”

“Even sometimes, because the young bird inside the eggshell develops, the eggshell is broken by the developing young bird!”

“As a result, since 1950, not a single newborn bald eagle has appeared in the entire territory of America!”

“The entire population of bald eagles, there is a fault!”

What Wang Yifan said was not nonsense.

In the previous life, it was the pesticide abuse that led to the near extinction of America’s national bird.

Bald eagles, from the peak of more than 100,000 that year.

It was reduced to fewer than 800.

Even the once-native sea eagles were completely extinct.

Subspecies can only be introduced from Alaska.

It was not until 1972, when the América state banned the use of DDT pesticides, that the population of bald eagles recovered.

Rao is so.

Scientists still detected DDT residues in Arctic krill 20 years later.

It can be said.

The pollution of the American nation is a global disaster.

“The bald eagle is the national bird of America, and the people of America never thought of extincting it.”

“However, because of their own abuse of pesticides, they have caused environmental damage.”

“I can only say that Shi Ye is also fate!”

Hearing Wang Yifan actually tell such a bizarre history.

Netizens couldn’t help but be amazed.

“This is called too many lines of unrighteousness, and you will kill yourself!”

“Hahaha, I blindly engaged in pesticides and almost exterminated my own national bird!”

“It’s a really nasty operation.”

“This is the cycle of nature, according to the anchor, in fact, people eat toxic fish, DDT pesticides will also remain on people!”

“Lying groove, thinking about it like this, I also feel cold!”

“Pesticides, food additives, these things are terrible.”

Watch the heated discussion among netizens.

Wang Yifan was also interested.

“In fact, the reasons for the extinction of animals in nature can be said to be varied, and the extinction of bald eagles is not the most bizarre at all!”

“Oh! Anchor, tell me about it! What other bizarre way to extinction? ”

Wang Yifan cleared his throat.

“I know a more bizarre way of extinction, which should be the extinction of the European sable!”

“Because of the continental plate drift, the world’s sable is divided into several major species, namely European sable, Asian sable, North American sable.”

“Sables are known to have very warm fur and are extremely valuable fur.”

“So, there are farms all over the world that raise sables.”

“Among them, North American sable is particularly favored by farms because of its fast growth.”

“So in the last century, some European feedlots introduced American sables.”

“But due to accidents, some American sables escaped into the wild.”

.

“Oh?”

“Is that a North American sable that ran into the wild and bit all the European sable to death?”

“Yes, don’t North American sables grow fast!”

Speaking of which, fans have raised questions.

Instead, Wang Yifan shook his head.

“Normal people think of American sable attacking European sable, which led to the extinction of European sable.”

“However, the real reason is very bizarre!”

“The reason for the extinction of the European sable.”

“The estrus period of the American sable is a month earlier than the European sable!”

？？？

Is it because of this?

The millions of netizens in front of the screen are full of black question marks.

“A month early in heat… Can it lead to the extinction of European sables? ”

“Yes!”

Wang Yifan nodded confidently.

“The American sable that first came into heat is constantly looking for female sables to mate.”

“When the male European sable was in heat, it was found that most of the female European sable was pregnant!”

“And, because of reproductive isolation.”

“Although these female European sables are pregnant, their embryos are not viable.”

“Soon a miscarriage.”

“But this interval will cause European sables to miss the annual breeding season.”

“By the time European zoologists found out, the European sable in the wild was all extinct!”

“You say.”

“Is this not … Bizarre and tragic story? ”

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