Every year, millions of birds die from colliding with windows. Birds are unable to see glass and some windows are so reflective that birds think they’re flying into reflected scenery rather than a window. Bird-glass collisions occur most frequently during spring and fall migration seasons, and especially at night when birds fly long distances, navigating by the stars. The artificial lights in cities can distract and disorient birds, leading to collisions.
But there is hope! To prevent bird collisions in your home and office:
- Apply stickers, tape, or decals to the window. These should be spaced 4 inches apart vertically or 2 inches apart horizontally. (See https://abcbirds.org/abc-bird-tape/.)
- Install window screens. Screens installed more than a few inches away from the windows can provide a visual and physical barrier for birds and can soften any collision.
- Turn off all nonessential lights – both inside and outside – between 10pm and sunrise.
City Wildlife’s Lights Out DC program monitors bird collisions in the city. If you’re interested in learning more about Lights Out DC, including how to volunteer, please visit our website at https://citywildlife.org/programs/lights-out-dc/
If you find an injured bird, please call us at (202) 882-1000.
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