Birds vs. Glass

Image from http://simple-article10.blogspot.com/2011/07/glass-spells-danger-for-birds.html

Each year millions, if not billions, of birds are stunned, injured or killed by flying into glass. 

Recently, on a more chirpful - ahem, cheerful - note, the U.S. Green Building Council has began offering credits to builders for bird-friendly designs: A New LEED Credit for Bird-Friendly Buildings.

Additional articles of interest:
Glass Spells Danger for Birds
How to Keep Birds from Crashing into Windows
Bird-Friendly Glass Designed with Help from Spiders

Indigo bunting

Installation of bird-friendly glass at 100-year-old enclosed

swimming pool in Plauen, Germany