New York civic leaders said the lights of buildings above the 40th floor will be turned off after midnight in the fall and spring migration seasons to save birds.
Since 1997, more than 4,000 migratory birds have been killed or injured from colliding into skyscrapers, bird experts said.
McAdams was joined by city officials and real estate groups in promoting "Lights Out New York." One building group leader said he expected 100 percent compliance, and another said he expected around 95 percent of its members to participate.
The program was modeled after others in Chicago and Toronto. For those who would lament the dimming of New York's famed skyline, New York officials said it would only occur a few months a year and save energy.
