PORTLAND, Ore. (KOIN) — The Portland Audubon Society is urging Oregonians to go “Lights Out” for the next three nights to help migratory birds.
Around 7.3 million birds are expected to fly over Oregon on Sunday night alone, according to the Colorado State University Aeroecology Lab, which has an interactive map on its website.
Most birds migrate at night, according to the Audubon Society, because the atmosphere is more stable and cooler temperatures help the animals keep from overheating. It also offers cover from daytime predators like hawks.
But light pollution can make it more difficult for birds to find their way. Artificial lights can attract and disorient them, and even result in deadly collisions with structures like buildings and communication towers, according to CSU. That’s why bird experts ask people to turn off their outdoor lights and close their shades to reduce sky glow.
The busiest nights for birds in Oregon’s skies are forecast to be September 27-29, with the 27th having the most winged wanderers.
Some 4 million birds are expected to fly over the state Monday night, and another 3.6 million should be passing through Tuesday.
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