- Design landscaping to keep birds away from your building’s façade. Collisions are more likely to occur on windows that reflect vegetation.
- Go stand outside your windows and look in. If you can see your Indoor plants, so can the birds. Look for reflections, transparency, black hole/tunnel or pathway effect.
- Placement of bird feeders, outdoor plants, and indoor plants can be critical.
- Place feeders either very close to your window (less than 3 feet) to minimize velocity of impact or further way (greater than 30 feet) and adjacent or offset from your windows.
- Prevent reflection with awnings, overhangs or louvers.
- Provide visual clues to alert birds to presence of glass and reflective exteriors.
- If using window decals, use the 2 x 4 rule – most birds will not attempt to fly through horizontal spaces less than 2 inches high or through vertical spaces 4 inches wide or less.
- Patterns applied to the outer surface of glass are far more effective than applied to the inner surface. Researchers have found that patterns covering as little as 5% of the total glass surface can deter 90% of strikes under experimental conditions.
Examples of products available to help prevent bird/window collisions: WindowAlert (silhouettes); CollideEscape (window film); The Bird Screen Company (a variety of screen materials); Ornilux Bird Protection Glass
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