Bats are the “singers of death metal” among animals

Bats are the “death metal” singers of the animal kingdom, and their vocal range is wider than that of bats. Mariah Careydiscovered by the researchers.

The study suggests that flying mammals can reproduce a frequency range that far exceeds that of humans, using the same “growling” technique used by death metal artists for some sounds.

A team from the University of Southern Denmark has filmed for the first time what happens in a bat’s larynx when it makes a sound.

Professor Cohen Elemans, who led the study, said: “We have determined for the first time which physical structures in the larynx vibrate to create different vocalizations.

Researchers have found that bats are death metal performers in the animal kingdom and have a wider vocal range than Mariah Carey.

“For example, bats can make low-frequency screams using their so-called ‘false vocal cords’, just like death metal people do.”

In humans, these false vocal cords can help protect our airways by squeezing together to prevent material from entering the lungs when swallowed or asphyxiated.

Some people have the ability to squeeze them together when they sing, making a rough, husky sound.

Researchers have found that bats make a similar growling sound when they fly in and out of a densely populated roost, making a very low frequency sound that could indicate aggression or annoyance.

This noise is the opposite of their high frequency echolocation calls used while hunting.

Flying mammals can reproduce a frequency range far beyond that of a human, and use the same “growl” technique used by death metal singers for some sounds. Researchers at the University of Southern Denmark filmed what happens in a bat’s larynx when it makes a sound.

Researchers state that the normal vocal range of a bat is generally seven octaves.

“That’s wonderful,” said Professor Elemance. “In most mammals, the range is three to four, and in humans, it’s about three.

“Some human singers can reach the range of four to five, but there are very few of them.

“Well-known examples are Mariah Carey, Axl Rose and Prince. It turns out that bats surpass this range using other laryngeal structures.”

I write in a magazine Plos Biologythe team said: “We show that bats vibrate extremely thin and light membranes extending from their vocal cords to emit their high-frequency ultrasonic signals for echolocation.

“To expand their limited lower vocal range, bats make aggressive calls with their ventricular folds – like in a death metal growl.”

The vocal cords studied were taken from Dobenton’s bats living in Great Britain.

DO VAMPIRES EVER EAT HUMANS?

For a long time, a species of vampire known as hairy vampires was thought to feed only on the blood of birds.

There are three types of vampire bats: the common vampire bat, the hairy vampire bat, and the white-winged vampire bat.

But now, for the first time, scientists have discovered that they sometimes feed on humans as well.

The worrying prospect could lead to the spread of the disease, as vampire bats are known to be the main vectors of rabies.

Researchers at the Federal University of Pernambuco in Brazil decided to see how this species would behave in a bird shortage situation.

The team analyzed 70 fecal samples from a colony of hairy vampire bats living in Brazil’s Catimbau National Park.

To their surprise, they found that three of the samples contained traces of human blood.

Researchers believe that human encroachment into the national park may have forced vampire bats to taste the blood of mammals.

In his article published in Acta ChiropterologicaThe researchers wrote: “Counting humans as prey and the lack of blood in native species may reflect the low availability of wild birds in the study area, exacerbating the impact of human activities on local ecological processes.”