Firstly, starlings have been noticed to have this feature, meaning that birds are saved from hearing loss that follows the increase in age.
Having more knowledge about the ageless ears of barn owls will probably help create new treatments for human hearing issues. Birds can fix inner ear damage on their own.
A researcher from the Georg Klump of the University of Oldenburg, Germany, said owls maintain their hearing ability into old age.
He said just like humans repair injuries; birds can repair their ears, and regenerate their ear sensory cells. Perhaps, people got rid of these regrowing abilities during evolution. Like every other mammal, people often suffer hearing loss as they grow old.
Difference between mammals and birds
By 65 years, human beings may lose over 30 dB in sensitivity at high frequencies. Speaking of the research, work was going on to find the differences between mammals and birds, Dr. Stefan Heller from Stanford University School of Medicine stated .
Heller said there’s the need to study birds and mammals comparatively to find the distinctions in their regenerative abilities, something many laboratories all over the world are working to know. The study carried out on seven captive barn owls was published in the Royal Society Proceedings B, a journal.
The birds were nurtured to fly to get a food reward when they hear sounds. Surprisingly, the oldest owl, about 23 years showed no signs of hearing loss due to aging. Barn owls often live up to three or four years in the wild. They hunt prey at night with their hearing ability.