Bats wearing a small microphone show a flyer to avoid collisions.

The first bat wearing microphone helps biologists study the good safety records of bats when they avoid commuting time of commuting time.

Yossi Yovel, a neurologist at Tel Aviv University, said that about 2,000 larger mouse tail bats in the summer evening can be pushed out of the cave in 3 meters in the Hula Valley in Israel. In a distance, their appearance looks like a “feather of acting.”

He and his colleagues now studied Echolocation Chirps. Rhino Microphyllum Bats detect obstacles, including each other. In crowded flight The signal of a bat often hides the part of the neighborhood.Researchers report on April 8th Procedures of the National Science Academy. It is a flight mammal version of the castle of cocktail party mammals. But the team found that the bat was surprisingly there was almost no conflict.

Studying thousands of bats is not easy. YOVEL initially said, “We could only record the bat on the ground.” As a result, the information was so limited that he and his colleagues designed a small microphone that could be fixed (temporarily) (temporarily) (temporarily) (temporary) (temporary) (temporary) (temporary) to a lighter bat. The goal is to produce a device that adds only 4 grams to the weight of the flying animal.

The researchers used aerial recording to create a flight path of four small microphones and 96 tracking bats and a bat exodus and a computer model. Listening to this bat version of Sonar, Chirping and Echoes can find obstacles, food and each other.

In the hard exit hole of the cave, 90 %of the chirping can be covered. However, the important of the identity and the ping of the closet’s neighbors tend to be less. In particular, because the position of the rebuttal is moving forward, it comes from the bat of the bat. In addition, Chirping is “a lot of redundancy,” Yovel says. Eventually enough message is passed.

He also reduces the risk of collision and adds, “The moment it comes out through the hole, we start moving sideways.” When you get more than 1km in the formation of the acting feathers, you can leave the space to hear that the bat to the bottom of the bat.

The paper itself Cocktail party challenge for the open bat with the fringe Túngara frog hunting in central and South America. The goal with sound will be a challenge in the frog-full cacophony. But the repercussion of the bat can be called the balloon throat pouch of the frog.