A little relief for some headbanging birds

Birds that produce faint chirps, called flight calls, during nighttime migration collide with illuminated buildings much more often than closely related species that don't produce such calls, according to a new analysis of a 40-year record of thousands of building collisions in the Midwest. The ...This is an NSF Multimedia Gallery item.

Source: NSF Multimedia Gallery - April 18, 2019 Category: Science Source Type: video