Releasing exotic animals into new environments can lead to serious impacts. Because this behavior can make it difficult for these animals to survive and affect the local ecological balance, even causing species invasion.

The story below is an example.

In the 1920s, a number of exotic animals were introduced to the United States. During investigations in Europe, a member of the Domestication Society in America discovered a local bird called the starling , also known as the European starling . This bird has silky plumage, dark gray wings and a tuft of black feathers around its neck.

According to experts, animals’ living environments need to follow certain rules, because if they are artificially changed, very serious consequences can easily occur.

Ignoring the objections of other experts, this man returned to America with 60 starlings. Experts hope this bird can breed in America and bring different colors to the American sky.

Initially, experts worried whether this flock of strange birds could withstand the cold in America. But unexpectedly, these starlings not only survived the harsh cold but also reproduced quickly. Accordingly, in just a short time, the number of starlings increased from the initial 60 to thousands. This flock of birds has brought “disaster” to America.

By 1960, the number of European starlings in the US had increased to 200 million and officially became an aerial threat in the country. Starlings often fly in large flocks, “dominating” the skies of many native bird species.

However, this is not the worst. Because according to statistics, more than half of the plane crashes in the US in the 1960s were due to collisions with flocks of starlings.

On October 4, 1960, a Lockheed L188A Electra aircraft took off from Logan Airport (USA). But unexpectedly, just a few minutes after takeoff, the plane collided with a flock of starlings. Specifically, some starlings were also sucked into airplane engines, causing unexpected power outages and eventually causing aviation disasters.

This plane crashed into Winthrop Bay and killed 62 people. After investigation, authorities found 75 dead starlings on the runway.

According to experts, large aircraft can continue to fly after colliding with a bird weighing up to 2 kg. However, even small birds like starlings can damage a plane’s engine after a collision.

Starlings also eat crops and fruit, causing great damage to American agriculture. According to preliminary calculations by authorities, the United States loses about 1 billion USD each year because of this exotic bird.

Although the US has allowed hunting starlings, the reproduction rate of this bird is too fast. According to experts, even if a million starlings were killed each year, they would still be numerous and dominate America’s skies.

In addition to starlings, America also has a headache because of the prevalence and invasion of green iguanas. This is a native animal in Brazil and Mexico. Green iguanas first appeared in southern Florida (USA) in the 1960s after some people released them into the wild because they found them too large.

Unexpectedly, due to adapting to the post-subtropical environment in Florida, the number of green iguanas increased rapidly. Authorities tried to deal with the increase in iguana numbers by hiring a private company to conduct patrols in parks and public places in 2020. Although more than 200 iguanas were eliminated, but the number of these animals continues to increase.

The relationship between humans and nature is very close. Both sides have their own balance. Once the balance of one side is broken, the other side will certainly be affected. Therefore, humans should stay away and should not interfere with any form of competition in nature. Doing the opposite will disrupt the ecosystem, leading to consequences that are difficult to overcome.