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Slashdot: Noise From Traffic Stunts Growth of Baby Birds, Study Finds

Noise From Traffic Stunts Growth of Baby Birds, Study Finds
Published on April 27, 2024 at 01:32AM
Noise pollution from traffic stunts growth in baby birds, even while inside the egg, research has found. From a report: Unhatched birds and hatchlings that are exposed to noise from city traffic experience long-term negative effects on their health, growth and reproduction, the study found. "Sound has a much stronger and more direct impact on bird development than we knew before," said Dr Mylene Mariette, a bird communication expert at Deakin University in Australia and a co-author of the study, published in the journal Science. "It would be wise to work more to reduce noise pollution." A growing body of research has suggested that noise pollution causes stress to birds and makes communication harder for them. But whether birds are already distressed at a young age because they are affected by noise, or by how noise disrupts their environment and parental care, was still unclear. Mariette's team routinely exposed zebra finch eggs for five days to either silence, soothing playbacks of zebra finch songs, or recordings of city traffic noises such as revving motors and cars driving past. They did the same with newborn chicks for about four hours a night for up to 13 nights, without exposing the birds' parents to the sounds.

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