Death toll for birds hitting buildings may be over 1 billion a year in US report

Less than half of stunned or injured birds survive a collision with a window, pushing up estimates that over 1 billion birds die each year from flying into buildings in the US.

Researchers found about 60% of birds died after recovering from rehabilitative care post-building collision, suggesting higher bird mortality rates than previously assumed.

Deaths from building collisions peak in autumn during migration and summer breeding; territorial behavior during breeding seasons contributes to window strikes as birds react to reflections.

Read at www.theguardian.com