Conservationists blame bad weather and glass windows that don't reflect light, urge landlords to do more

Hundreds of birds migrating through New York City this week died after crashing into the city’s glass towers, a mass casualty event spotlighted by a New York City Audubon volunteer’s tweets showing the World Trade Center littered with bird carcasses.

Stormy weather Monday night into Tuesday contributed to the deaths, said Kaitlyn Parkins, NYC Audubon’s associate director of conservation and science.

“It seems that the storm might have brought the birds in lower than they would have otherwise have been, or just disoriented them,” Parkins added. “The effects of nocturnal light on birds is also quite strong, especially when it’s a cloudy night.”

NYC Audubon wants the owners of the World Trade Center towers and other buildings to help reduce the number of bird strikes by dimming the lights at night and by treating glass to make it more visible to birds.

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