The alarming bird depends on the person

A bird chirping outside the window in the morning woke me up to sleep. But a new study shows that the time of the crow is not fixed. It will raise the voice earlier due to the impact of artificial light and human noise.

Researchers from the University of Seville in Spain say that artificial light and traffic noise stimulate birds to raise their voices earlier in the morning . 'There have been previous studies evaluating the effects of artificial light on birdsong, but our research is the first to investigate the effect of noise. We observed that the species of starlings and finches will sing earlier due to the impact of noise , 'said Arroyo, the study's author.

The time of the crow is not fixed.It will raise the voice earlier by the impact of light and noise.

In this study, Arroyo and colleagues tested the streets of Seville, investigating the impact of traffic noise in the morning where birds regularly gather.

'About three hours before dawn, we went to the streets, where we recorded traffic noise at rush hour and replayed these recordings through loudspeakers, the sound intensity set. at 65 decibels. In this way, we can know the impact of traffic noise on bird wake time, ' Arroyo explained and said the study was conducted on 12 streets that were considered the most noisy. . As a result, the birds here wake up and make calls 20 to 30 minutes earlier than before the test.

This study shows that it seems that birds are very adaptable to urban life, such as sparrows, they are very sensitive to fluctuations in environmental factors, in this case, in particular, the noise.