An attractive transparent black fiberglass screen that hangs loosely in front of a pane of glass, providing a gentle cushion for birds that strike it. The popularity of picture windows, patio doors and double glazing has led to many injuries and fatalities among birds which fly into them.
Saenger Home: Henningsville, PA. Acopian Birdsavers used on a window known to average 100 bird-window collisions annually- now maybe 1 or 2 a year. Image courtesy of the Bird Screen Company Bird Screens .

Barriers to mount in front of a window to prevent birds that fly into it from striking the glass.

However, there are simple, practical steps we can take to drastically reduce that number.

Acopian BirdSavers - Prevent Birds from Flying into Windows. Tying Technique for 'All Paracord' BirdSavers. If you find a bird that has flown into a window, it may have suffered from concussion and could have internal injuries. Millions of wild birds are killed each year from flying into the windows of our homes and businesses. Broken wings or legs are rare. Here are my “Top 5” suggestions.