Portuguese island Corvo turns off lights for shearwaters

On the Portuguese island of Corvo in the Azores, all street lights are switched off every year in late October for five nights, from 9 p.m. to 4 a.m. This protects young seabirds such as Cory's shearwater, which leave their nests at night to fly out to sea but become disoriented by artificial light and crash. The Azores are home...