A growing number of New York sky-scrapers are switching off their lights to help reduce the number of birds hitting the high-rise buildings.The "lights out" project - organised by NYC Audubon - runs until 1 November, when migratory birds are expected to have completed their autumn migrations. The Empire State and Chrysler buildings are among those dimming their lights.An estimated 90,000 birds each year are killed in the city as a result of striking glass-fronted buildings. Read more...
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