LUNA Technical Requirements V1 Draft 2, released for public comment on September 13, 2021, align with this guidance. Using motion sensors or automated lighting controls to ensure lights are only on when needed.įor taller buildings (over three stories), the Lights Out campaign advises additional practices such as extinguishing or dimming exterior and decorative lighting avoiding floodlights and using warmer light (less than 3,000 Kelvin) outdoors.Using shields to direct light down and avoid it shining into the sky or trees.Close blinds at night to reduce light emitted from windows.įor essential lighting (such as security lights), best practices published by the Illuminating Engineering Society (IES) and International Dark Sky Association (IDA) include:.
Don’t use landscape lighting near trees and gardens where birds may be resting.Turn off non-essential lights from at least 11 p.m.And right now.Ĭonsistent with our recently announced LUNA Technical Requirements designed to save energy and mitigate adverse environmental impacts of lighting at night, the DLC is taking an opportunity this fall to spread the word about the BirdCast Lights Out campaign: The program offers simple steps for building owners and managers to lessen the impact of light pollution during fall (and spring) migration.
While this is a sad reality, it is a situation that can be mitigated by commercial facility operators, city building managers, colleges and universities – and each of us. Cornell University Lab of Ornithology, Colorado State University and UMass Amherst’s BirdCast website reports that an estimated 365 million to 988 million birds die in collisions with buildings annually. Excessive, poorly controlled light can attract and disorient birds –causing them to collide with illuminated buildings or circle lit-up structures to the point of exhaustion or simply draw them into areas where they face further risks during daylight hours. Unlike humans who rely on light at night for safety and navigation, migrating birds are confused and distracted by artificial light, making it hazard. They face many perils along the way – including one we can all mitigate: light pollution. Covering thousands of miles across states, countries and continents, birds such as warblers, orioles, wrens, herons and tanagers make these age-old journeys in the dark of night. During September and October, billions of birds are migrating to their wintering grounds (find information for specific regions here).
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