The changing weather brings a new spectacle in mid-Tulsa, as a school that's empty of students finds a crowd they didn't know was there.
Every evening about sunset, at 11th & Yale, with almost clock-like precision, a few birds appear around the old brick building that houses Street School.
Misty Codry and Carla Goldsmith spotted them first.
“I was on a walk and said look at that bird party,” Codry said.
About two weeks ago, Carla and Misty started noticing birds congregating, swirling into circles above the building. It starts every night about 15 minutes after sunset, and quickly, it builds into a flock of thousands.
Since the birds arrive at night, the people who work at Street School didn't know they were here.
The Audubon Society experts said this scene will go quickly, as the birds are just assembling, and soon they'll migrate. The peak of the action is 7:50 to 8:10 each night.
The director of Street School said it appears the chimney is completely sealed off and there's no sight or sound of them inside the building. The birds are protected by law, so the school can't remove them.