JAN 30, 2018 05:03 PM PST

Here's Why Roosters Don't Go Deaf From Crowing

If you’ve ever raised chickens before, then you might be familiar with the loud crowing roosters do with each passing morning. Believe it or not, that crowing can be louder than you might think, and that raises questions about how roosters don’t deafen themselves with time.

Why don't roosters go deaf from their loud crowing every morning?

Image Credit: Pixabay

Researchers from both the University of Antwerp and the University of Ghent sought to find out, so they studied roosters up close to learn more. They’ve published their findings in the journal Zoology.

After attaching metered microphones to roosters’ heads to analyze crowing volume, the researchers found that the sound can meet or exceed 100 decibels. For comparison, that’s approximately as loud as a gasoline-powered chainsaw.

Frequently using gas-powered chainsaws without ear protection has been linked to deafness in humans, so given the similarities in volume, the curious researchers appear to be justified in their curiosity about how roosters evade deafness from their own crowing.

Related: Chickens are smarter than you think

Their inquisitiveness led them to study the roosters’ ear canals, and when they did, they found the same hair cells that humans have. Flustered, the researchers didn’t stop there; they moved on to conducting micro-computerized tomography scans on the birds’ skulls.

The results from these scans highlighted a critical detail in the quest to learn how roosters protect their hearing. As it would seem, the birds sport a sound-dampening layer of tissue over half of their eardrum. This added layer, albeit insignificant at first glance, could shield the eardrum just enough to prevent deafness over time.

As a side note, various birds can regenerate damaged hair cells innately, and roosters might not be any different.

There’s undoubtedly more than we could learn about roosters’ crowing habits, and with that in mind, research will likely continue. Then again, the findings of this study seem to answer the researchers’ initial question, so one might call it a success.

Source: Phys.org

 

About the Author
  • Fascinated by scientific discoveries and media, Anthony found his way here at LabRoots, where he would be able to dabble in the two. Anthony is a technology junkie that has vast experience in computer systems and automobile mechanics, as opposite as those sound.
You May Also Like
NOV 13, 2018
Plants & Animals
NOV 13, 2018
Conservation Efforts Are Helping Amazon Turtle Populations Bounce Back
It’s not too often that conservationists get the chance to share a successful conservation story, but as it would seem, nearly 40 years’ worth...
DEC 03, 2018
Earth & The Environment
DEC 03, 2018
US to open ocean to seismic blasting
Marine creatures suffered a big loss recently with the announcement from the Trump administration that it will be allowing companies to use seismic airguns...
DEC 12, 2018
Earth & The Environment
DEC 12, 2018
Bioenergy crops are hurting global biodiversity
New research published in the Proceedings of the National Academy of Sciences suggests that bioenergy crop production may not be as eco-friendly as once th...
DEC 13, 2018
Chemistry & Physics
DEC 13, 2018
Biochemical Antifreezes: How Do They Work?
How do fish survive in the Arctic ocean where the temperature is under zero degree Celsius most of the year? They rely on a class of polypeptides called th...
JAN 02, 2019
Health & Medicine
JAN 02, 2019
The Creatures Living on Our Skin
While the images that you find on different websites of mites that live on humans may be frightening, most have a symbiotic relationship with us and are as...
DEC 24, 2018
Plants & Animals
DEC 24, 2018
Decoding the Secrets of Howler Monkey Evolution
There exist a bevy of ways that an animal species can be driven to evolve, but one of the more controversial methods of evolution involves a process known...
Loading Comments...