Birds become sleepless and lose their bearings due to artificial lights.

Artificial city lights cause a series of harmful effects to birds that live or pass through urban areas. One of the most serious is insomnia: a study published in the magazine Science He analyzed, also with the help of artificial intelligence, 60 million bird calls from around the world throughout the day, from dawn to dusk. The final result was this: birds living in urban areas sing about 50 minutes more each day than in the countryside, and the reason is linked to sleep loss, which in turn is a consequence of light pollution. Birds, like humans, have a biological clock internal (circadian rhythm) that regulates the cycles of sleep-wake, supply e migrazione, often synchronized with the natural lightArtificial light disrupts this clock, making birds believe it's still daytime, and this pushes them to remain active throughout the night (hence the increased time dedicated to this activity), drastically reducing their sleep time. With insomnia, light pollution in the city it causes other damage to birds:

• Migratory birds orient themselves by using starlight and the moon. Artificial lights confuse these natural signals, causing them to get lost and trapping them in areas unsuitable for their natural habitat.
• Artificial lights can make birds more visible to nocturnal predators, increasing their stress.
• Young birds born in environments that are too bright can grow at an altered rate right from birth, and this can affect their