Lights Out Program

Photo by Manuel Cosentino via Unsplash

During peak migration seasons (late September or early October), as many as 400 million birds can fly over the United States in one night alone.

Throughout spring and fall migration periods (August 15–November 15 and April 15–May 31), birds use the night sky to navigate as they make their journeys.

However, artificial lights left on at night—particularly from skyscrapers, office buildings, and brightly lit homes—confuse and disorient birds, which causes them to collide into buildings and windows.

While this does result in some bird fatalities, it is more often the case that birds waste precious energy flying around and calling birds in confusion—making them more vulnerable to other threats.

Turning off bright lights at night—even for small periods of time—can help significantly reduces bird population density in an area within minutes.

This was seen in the case of the annual 9/11 memorial in New York City, during which hundreds of birds were caught in the light beams every year but, when lights were turned off for even 20 or 30 minutes at a time, population density cleared substantially.

As with many bird-friendly improvements, simple actions can make all the difference.

To contribute to Lights Out, consider the following:

  • Turn off unnecessary lights after 11 p.m., especially from April 15–May 31 and August 15–November 15.
  • Use motion sensors or dimmers
  • Pull down shades & window coverings
  • Minimize flood lights
  • Swap bright bulbs for warmer ones, which are less likely to trigger behavioral responses in birds

Explore these other helpful resources on going Lights Out and more.

Buffalo Audubon Society logo, featuring a wood duck facing right

Buffalo Audubon Society

Dedicated to connecting with and protecting the natural world through bird-focused activities, advocacy, and habitat restoration