Scientists estimate that 300 million to one billion birds die each year from collisions with glass, the majority of which is on homes.

The following links will take you to websites of two other organizations with helpful recommendations on how to reduce window collisions by birds at your home.

NY Times article on new technologies to prevent collitions

American Bird Conservancy
New Online Brochure:  How to Prevent Birds From CollidingWith Home Windows / Doors

Bird Watcher's Digest
Top 10 Things You can Do to Prevent Window Strikes