How to chase birds?Gunpowder, natural enemy sounds, and elimination of food.

[Anchor]
As bird collisions are cited as one of the main factors in the Jeju Air disaster, bird collision prevention technology is drawing attention again.

Reporter Lee Sung-kyu summarized what methods there are.

[Reporter]
The most common way to chase a bird at an airport is to make a loud noise to surprise the bird.

They chase birds through gunfire or turn on predators or birds of prey to chase birds near the runway.

It also takes advantage of the birds' habit of being afraid of bright light.

[Ahn Young-tae/Professor of Aviation Operations at Far East University] The aircraft itself turns on all of its lights during the take-off and landing stages. So when birds see big lights, they tend to avoid them..]

There are also ways to classify birds that frequently appear at airports by species and respond to each characteristic.

For example, a bird with a strong instinct to protect its territory needs strong stimulation, so it bursts gunpowder or plays a tape recorded with the sound of birds of natural enemies.

Curious birds, on the other hand, can be sent elsewhere with even a slight stimulus, so they sound warning sirens or shoot laser lights.

It also fundamentally blocks the food of birds that frequently appear at airports through control work.

Analysis of the gut DNA of bird carcasses around the airport reveals the prey the bird mainly eats and reflects this result in control work.

In addition, there is a method of using a high frequency of 20 ㎑ (kilohertz) or higher.

Humans rarely hear it, but algae are the principle of utilizing frequencies that feel threatened or unpleasant.

Muan International Airport, where the accident occurred, was found to be equipped with radar and thermal imaging cameras, which are basic equipment for detecting algae, and it is pointed out that it is urgent to prepare a comprehensive response system.

I'm Lee Sung Kyu of YTN Science.

Edit
: Hwang Yu-min
Graphic: Jeon Whee Lin