Birds are unable to view reflective or clear glass as a barrier to avoid, resulting in tragic collisions that claim billions of bird lives annually. The best approach to prevent such occurrences is the application of markers that make glass visible to birds. Studies have shown that glass treatment works best when markers are large enough and spaced close enough to be easily seen by birds, enabling them to change their flight path in time to avoid the glass. Research suggests the following as BEST PRACTICES for optimal effectiveness: • Visual markers should be of at least ¼ of an inch (6 mm) or larger. The sooner a bird can see the markers, the more time they have to alter their course. • Markers should be no more than 2 in x 2 in (5 cm x 5 cm) apart. This helps protect even the smallest birds, such as Hummingbirds and Kinglets. The denser the pattern, the better the protection. • Full surface width coverage is recommended for all adjacent glass. Birds are adept at altering course qui...