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Traffic Noise can reduce Birds’ ability to hear an Alarm call, making them Vulnerable to Predators

Excess noise in the environment from sources such as traffic can have negative effects on animals that rely on sound to communicate and get information about their surroundings

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Excess noise lead to hearing imparement thus birds get vulnerable to predators
Birds: Hearing imparement due to excess noise,pixabay

New York, December 28,2016: Traffic noise can reduce birds’ ability to hear an alarm call, thereby potentially increasing their vulnerability to predators, a new research has found.

“There has been lots of work on how anthropogenic noise affects vocal production, but much less on the response of animals to signals in the presence of noise,” said one of the researchers, Megan Gall, from Vassar College in New York.

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The researchers tested how traffic noise affected the reactions of Black-capped Chickadees and Tufted Titmice to alarm calls, which warn birds that a predator is nearby.

Using speakers set up near feeding platforms baited with bird seed, they recorded the birds’ responses to three different recordings — alarm calls alone, traffic noise alone, and a combination of the two.

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The traffic noise did not deter the birds from feeding, but five times as many birds approached speakers when the researchers played alarm calls on their own compared with when traffic sounds were added, according to the study published in the journal The Condor: Ornithological Applications.

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The findings suggest that excess noise in the environment from sources such as traffic can have negative effects on animals that rely on sound to communicate and get information about their surroundings. (IANS)

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People Who Suffer From Hearing Loss Before 50 More Likely to Misuse Opioids

For those whose health care providers know of their hearing loss, McKee suspects that the higher rate of prescription opioid use disorder may stem from a higher rate of being placed on controlled substances to quickly address pain issues

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Here is good news for women who are suffering from hearing loss. A new study has found that consuming healthy food may decrease the risk of hearing loss in women.
Healthy Diet to Decrease HearingLoss in Women, Pixabay

People below 50 years who suffer from hearing loss are more likely to misuse opioids, alcohol and other drugs than their peers who have no such disorder, say researchers.

The findings showed adults under 35 years with a hearing loss were 2.5 times more likely to have a prescription opioid use disorder.

In addition, those between age 35 years and 49 years who had hearing loss were nearly twice as likely as their hearing peers to have disorders related to both prescription opioids and alcohol, said the study published in the American Journal of Preventive Medicine.

hearing loss
Representational image.

For the study, the team included 86,186 adults.

“Hearing loss is connected with a variety of health problems, including mental and physical health, which may place these individuals at risk for pain disorders. Also, the marginalising effects of hearing loss, such as social isolation, may be creating higher rates of substance use disorders too,” said Michael McKee from University of Michigan in the US.

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For those whose health care providers know of their hearing loss, McKee suspects that the higher rate of prescription opioid use disorder may stem from a higher rate of being placed on controlled substances to quickly address pain issues, perhaps because of communication barriers. (IANS)