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The plea from Audubon N.C. follows a study last year that estimated more than 1 billion birds are killed in collisions with buildings in the U.S. annually. It cites artificial lights at night and reflective windows as causes — they confuse birds that use the light from stars to migrate.

As the fall migration season ramps up, Audubon North Carolina is encouraging people to help make night skies darker for migrating birds.

The long-running bird census is an annual conservation effort done by volunteers in the U.S and North Carolina to help keep track of bird species.

Non-essential city building lights in Raleigh will be shut off each night from 11 p.m. to 6 a.m. through the end of November to help with bird migration.

Long-distance travellers are stopping through North Carolina this week. Despite weighing as much as a triple-A battery, the Blackpoll Warbler annually…

Long-distance travellers are stopping through North Carolina this week. Despite weighing as much as a triple-A battery, the Blackpoll Warbler annually…