Protect Wild Birds from Window Strikes
Artscape, the leader in privacy and decorative window film, developed Bird's Eye View to help reduce birdstrikes by making the glass more visible to our fine feathered friends.
Our unique geometric lenses refract UV light and have proven highly effective in reducing bird window collisions.
Bird-window collisions (BWCs) are the largest human-caused factor in bird mortality.
It is estimated that in the United States alone that nearly a billion birds are killed annually from BWCs. A leading theory attributes BWCs to reflection of habitat in windows (e.g. a bird will mistake the reflection of a tree for the actual tree). Artscape has developed a new product to reduce the impact of window-collisions on bird populations. The solution is a product that emits light where bird vision is sensitive but human vision is not. This allows birds to differentiate reflections in windows from actual habitat while remaining aesthetically pleasing to people.
Birds Do Not See the Glass
Birds do not perceive the window glass as a barrier, instead they see the seamless continuation of habitat.
Bird’s Eye View absorbs light peaking at 410 nanometers (nm) and reemits the light peaking at 450 nm. Bird vision extends well into the ultraviolet range and is near maximum sensitivity at 450 nm whereas; human vision is only about 7% of maximum sensitivity at 450 nm. To birds, Bird’s Eye View film presents a bright blue glow spreading out in all directions across the window surface disrupting the reflection of habitat but to humans, it appears as a faint white geometric design.
Figure 1. Spectroscopic data showing the range of light absorbed (excitation) and the light emitted (emission) by the Bird’s Eye View film. The green curve shows the approximate spectral response of the human eye.
Figure 2. The spectrum that results from 410 nm light striking glass with Bird’s Eye View film affixed to the back surface. The peak at 410 nm is the result of incident light reflecting off the surface of the glass and the peak at 450 nm is the result of light being emitted by the Bird’s Eye View film.
Credit: Steven G. Mayer, Ph.D., Professor, Department of Chemistry, University of Portland, June 2015
U.S. Patent #’s 7,468,203 B2 / 8,007,896 / Other U.S. & Foreign Patents Pending
We recommend placing (2) 6" pieces or (4) 4" pieces in the center of the window about 4" apart. Place on the inside of the glass. There is no absolute as to the number of pieces required since each condition will vary but this is a good starting point. The film will fluoresce and be effective beyond the surface area of the film. The window in the photo shown is 70" X 90" with two 6" pieces placed in the center, which was very effective at solving collisions. Also, please make sure to place the film in areas of the glass that correspond to the biggest problem.
If more pieces are needed for a very large window add to the center in 4" increments.
Do not use any adhesives. The film will remain on the glass until removed.
To assure that the film adheres to the window:
- Window must be completely clean.
- Must be a cool (55-70ºF), smooth surface with no texture of any kind.
- Shiny side of Bird’s Eye View squares must be against the glass.