Going Green Means Taking Action for Wildlife. Light pollution is caused by the many lights of cities and suburbs that glow in the night sky. This unnatural light is taking its toll on bird populations that use moon and stars to guide their night migrations.
Artificial lights after sunset can disorient birds, lead them astray, or even cause them to crash or circle brightly lit buildings until they become too exhausted to fly. In fact, a study by the Field Museum in Chicago found that turning off the lights at one downtown high-rise reduced migratory bird deaths there by 80 percent.
Golden Gate Audubon Society, a local partner of Oakland Zoo, runs a program called Lights Out that encourages building owners, managers and tenants to work together to ensure that any and all unnecessary lighting is turned off during spring and fall migrations. PG&E even offers rebates for installing motion sensors and light timers. Easy choices like these save birds' lives, and save money and energy, too.
What you can do at home!