Bird flocks hit WTC

Hundreds of migratory birds fatally crashed into World Trade Center towers this week, leaving a graveyard of winged carcasses on the sidewalks below, officials said Wednesday.

At least 291 songbirds — including black-and-white warblers, American redstarts and ovenbirds — became disoriented by lights and reflective glass while flying south on Monday night or Tuesday morning, said Melissa Breyer, a volunteer bird-collision monitor for conservation group New York City Audubon.

Breyer, who typically finds 15 or 20 feathered corpses per trip, was stunned to see about 300 at the bases of One, Three, Four and Seven World Trade Centers on Tuesday.

“It was an overwhelming thing,” she told The Post.