Bird conscious light diagram

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Public Domain
The graphic shows a series of street lights that illustrate the problem with unnecessary nighttime lighting and three possible solutions. The first light on the far left shows a street light that is too bright and creates a large amount of light pollution. The second light is turned off with a clock-face icon below it. This means to turns lights off when they are not needed and this can be done with automatic controls like sensors or timers. The third light is less bright, and has a shield added to it so that light does not spill into the sky and the surrounding environment. The fourth light is also much dimmer with a shield and the color is amber instead of white. Amber lighting has been found to be less harmful to birds.
Subject tags
Migratory birds