![]() Small white markers are transferred from the tape to a window’s exterior, leaving an attractive, unobtrusive grid of dots that make the glass visible to birds while providing more than 98-percent-clear viewing from inside. Image courtesy of the Convenience Group Feather Friendly Do-It-Yourself Tape Birds see it and are warned of the glass, but light still passes through. Translucent tape to adhere to a window’s exterior. Birds see the lines and avoid them, while the space between the lines and glass gives birds that touch them a chance to spread their wings and brace themselves. WEB: Image courtesy of Santa Rosa National Bird Crash PreventerĪ preassembled curtain of taut monofilament lines strung three inches apart and five inches from the exterior of a window or sliding-door side panel. Proceeds support conservation programs at the Acopian Center for the Environment. Instructions on the website describe how you can build your own. Recommended by Contributing Editor David Sibley and Daniel Klem Jr., professor of ornithology and conservation biology at Muhlenberg College in Pennsylvania, who has been studying bird-window collisions for more than 20 years. Velcro secures the hanging cords to the top of the window. Ingenious and attractive, BirdSavers consist of one-eighth-inch-diameter nylon cords that dangle about four inches apart in front of a window’s exterior, where they are visible to birds, which avoid them. Image courtesy of Acopian BirdSavers Acopian BirdSavers Birds see these cords and try to avoid them. Source: Fatal Light Awareness Program (FLAP) Birds Avoid Strings and Cords on WindowsĬurtains of nylon cords or monofilament lines to hang over a window’s exterior. If it is reflective, the pattern must be applied to the outside. Patterns can be placed on the inside or outside of a window that is transparent. Elements should be at least one-eighth inch in width and should contrast as much as possible with the windowpane. Elements placed in rows should be two inches apart. ![]() Elements arranged in columns should be four inches apart. Use multiple decals create a pattern that covers the window uniformly. Below are some of the best products on the market for doing just that.ģ tips for using decals and paint on windows to prevent bird strikes 1. ![]() You can do your part to make the skies friendly for migrating birds by deterring window collisions and minimizing light pollution at your home. Lights Out Chicago, for example, has saved 10,000 birds annually. Toronto, New York, San Francisco, and other cities have started lights-out programs aimed at persuading building owners to turn off lights from dusk to dawn during migration season. Confused and exhausted, they often collide with buildings, homes, or each other.īut it doesn’t have to be that way. Once in a beam of light, they may be reluctant to fly back out, or become disoriented and pulled off course. The glow draws birds in, and they can become trapped. Our brightly illuminated cities and neighborhoods interfere with this behavior by letting artificial light leak into the atmosphere. Many birds migrate then, using natural light from the moon, stars, and setting sun as navigational tools. 2. The window is transparent, and birds see through it to appealing objects on the other side.Įven if the impact doesn’t kill a bird immediately, it may be injured or stunned, making it vulnerable to predation later. Daytime bird collisions typically occur for one of two reasons: 1. The window is reflecting the surrounding habitat, and birds can’t tell the difference. ![]()
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