Updated
Updated · The New York Times · Sep 12
U.S. Urges Lights Out for 300 Million Migrating Birds as 1 Billion Die in Building Collisions
Updated
Updated · The New York Times · Sep 12

U.S. Urges Lights Out for 300 Million Migrating Birds as 1 Billion Die in Building Collisions

3 articles · Updated · The New York Times · Sep 12

Summary

  • More than 300 million birds are expected to cross the United States on Saturday, and residents are being asked to switch off or dim lights after dark to reduce deadly disorientation.
  • At least 1 billion birds die each year after crashing into skyscrapers and other illuminated buildings, according to Cornell University’s BirdCast, which tracks migration in real time.
  • Eastern Minnesota and Michigan are forecast to see the heaviest concentrations Saturday as hundreds of species head from the Northern Hemisphere toward South America for warmer conditions and more food.

Insights

Why are modern sustainable skyscrapers inadvertently becoming invisible graveyards for millions of night-flying songbirds every fall?
Could the simple act of flipping a light switch save billions of migrating birds from a hidden urban death trap?