禁漫天堂

While most people are asleep, tens of thousands of songbirds are flying south for the winter. The annual migration is peaking this week in Ohio, Kentucky and Indiana, and in some cases, it's hampered by city lights.

The 's Cory Christopher says the birds are navigating by the Earth's magnetic field, and blue light disrupts that.

鈥淵ou鈥檝e heard what blue light can do to people 鈥� it can keep you up at night, it gives you energy. It does similar things to birds,鈥� he says. 鈥淏ut importantly when birds sense that blue light, they鈥檙e not able to process information to see the magnetic field anymore.鈥�

Christopher says that can lead to birds crashing into windows, or just flying around lights until they're too tired to continue.

鈥淭hey can actually become what鈥檚 called 鈥榯rapped,鈥� 鈥� he says. 鈥淭hey become so disoriented it鈥檚 like trying to find your way out of a hall of mirrors in a funhouse.鈥�

He says the solution is simple: turn off unnecessary lights at night.

鈥淲e typically ask people to , usually between the hours of 11 p.m. and 6 a.m. And then also again in the spring. About March 15 through May, because at that point they鈥檙e going to be coming back north.鈥�

Christopher says songbirds fill an important ecological niche, eating pests and helping distribute seeds.

鈥淲ithout them we would see an increase in those pesky insects that none of us like: the mosquitoes,鈥� he says. 鈥淏ut also think about the fruit trees鈥� their reproduction would be interfered with if birds weren鈥檛 eating their fruit and dispersing the seeds. We should care because even through they鈥檙e pretty for us to look at, and we like feeding them food, they鈥檙e doing us some pretty big favors out there in the natural world.鈥�

Christopher says in 2017, the Cincinnati Nature Center, the Cincinnati Zoo, and the Cincinnati Museum Center teamed up to study the local night sky. He says much of the focus was on Downtown and included an effort to encourage turning lights off.

Another aspect involved recording Downtown bird strikes. Christopher says the good news is Cincinnati doesn鈥檛 appear to be as dangerous to birds as other cities, like Columbus and Chicago. He says they鈥檙e not sure why.