Utah’s city lights are baffling — and killing — migratory birds. Conservationists say it’s time to go dark.

When a bird flies into Salt Lake City at night, it is bombarded with confusing waypoints: lighted windows in tall buildings, digital billboards, electric signs and floodlit façades.

Source: Utah’s city lights are baffling — and killing — migratory birds. Conservationists say it’s time to go dark.