Bird conscious light diagram

The graphic shows a series of streetlights that illustrate how nighttime lighting can unnecessarily illuminate areas beyond where it is useful, and different solutions. The first light on the far left shows a streetlight 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 to indicate that lights should be turned off when they are not needed, and this can be done with network or automatic controls like sensors or timers. The third light is less bright and has a shield added to it so that there is no uplight, and light is directed only to where it is useful. The fourth light is also much dimmer with a shield, and the light's color is amber, or “warmer”, with a correlated color temperature less than 2700 Kelvin, which reduces skyglow.