![]() ![]() ![]() You can order them to fit your windows or make your own. They are highly effective and are the method we use to safeguard windows at the Cornell Lab headquarters. They do the work of tape or decals but are easier to install and can be aesthetically pleasing. Acopian Bird Savers. Also known as “zen curtains,” these closely spaced ropes hang down over windows.Products such as those available at Feather Friendly work well in preventing collisions. Long-lasting tape products offer an easier way to apply the correct spacing of dots across your window. Note that hawk silhouettes do little to deter birds. Remember: placing just one or two window stickers on a large window is not going to prevent collisions-they must cover most of the glass with the spaces between too narrow for birds to fly through. These are only effective when spaced very closely (see above). Decals. Put decals, stickers, sun catchers, mylar strips, masking tape, or other objects (even sticky notes) on the outside surface of the window.Mark the outside of the window with soap or tempera paint, which is inexpensive and long lasting. You can use either a grid pattern of 2 inches by 2 inches (see above), or get creative and paint patterns or artwork on your window. (This will safeguard the windows for even the smallest birds such as hummingbirds, gnatcatchers, siskins, kinglets, and the like.) All marking techniques should be applied to the outside of the window. To deter small birds, vertical markings on windows should ideally be spaced in a 2-inch by 2-inch grid. “If you’ve got windows near a bird feeder, you should make them bird friendly and don’t worry about how far away they are.” Treatments for Existing Windows Past recommendations about safe distances for feeders outside windows are no longer thought to be valid, Sheppard says. If you see branches or sky reflected in or visible through the glass, that’s what the birds will see, too. Go outside and look at your windows from a bird’s point of view. Start by identifying dangerous windows, including large picture windows, paired windows at right angles to each other, or windows with feeders outside. How to Safeguard Your Windows For Birds Reflected landscapes can confuse birds and cause deadly window strikes. Most of the remedies suggested below for window strikes will also help solve the problem of a bird attacking its reflection. Although it can be annoying to the homeowner, it’s seldom a threat to the bird’s survival. This happens most frequently in the spring when territoriality is high. There’s one additional reason: birds sometimes see their reflection in a window and attack it. The BirdCast project and the Fatal Light Awareness Program have more about this problem. As a subsequent hazard, migrants drawn off course by urban lighting may roost safely nearby, only to become vulnerable to daytime reflections in windows the following day. In the lighted area, they mill about, sometimes colliding with one another or the lighted structure. ![]() At night, nocturnal migrants (including most songbirds) crash because they fly into lighted windows.įor reasons not entirely understood, lights divert nocturnal migrants from their original path, especially in low-ceiling or foggy conditions. In daylight, birds crash into windows because they see reflections of vegetation or see through the glass to potted plants or vegetation on the other side. There are two main types of window collisions: daytime and nighttime. He writes, “Glass is an indiscriminate killer that takes the fit as well as the unfit of a species’ population.” Why Birds Collide With Windows The window imprint left by a Mourning Dove. Daniel Klem of Muhlenberg College has researched this issue since the 1970s. Many times these birds die later from internal bleeding or bruising, especially on the brain. What happens to birds that hit windows? Sadly, the bird often dies, even when it is only temporarily stunned and manages to fly away. ![]()
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