According to the British newspaper “Daily Mail”, researchers in Australia were able to measure the brain activity of sleeping birds, comparing that to the time when they were exposed to artificial white or amber light, and the latter is often described as a way to reduce light pollution, with claims that it has an effect Smaller than white light, less disturbing to the stars.
However, the team found that both light shapes affect magpies and pigeons sleep patterns, with disruptive amber light such as white for the bathroom.
The results indicate that the light effect may be species-specific, and therefore the use of amber lighting may not be a one-size-fits-all solution to light pollution.
“We know that sleep is important for animals not only to function, but to thrive,” said researcher and zoologist Ann Olsbroek of the University of Melbourne.
She added, “While amber lighting appears to have a less harmful effect than white light on magpies, our findings indicate that the relative effects of light pollution on birds may be specific to the species.”
“In addition, intermittent sleep patterns that compel birds to catch sleep during the day can affect their ability to search for food, fight predators, and find companions,” she added.
Dr. Olsbrooke and colleagues used mini-sensors to measure brain activity for magpies and pigeons when exposed to white light and amber with a similar intensity to street lamps at night.
The team found that both REM and non-rapid eye movement (NREM) cycles changed due to light, changing their length, structure, and intensity.
While the amber light has proven to be less disturbing than white light, it has been observed that the bathroom is affected by both.