The Brief
- Hundreds of millions of migrating birds were detected across the U.S. on Sept. 9.
- According to Cornell University’s BirdCast, the highest concentration was over Wisconsin.
- BirdCast said most birds migrate at night in the first few hours after sunset.
MILWAUKEE – A massive bird migration occurred over Wisconsin on Wednesday night, Sept. 9.
Bird migration
By the numbers:
According to Cornell University’s BirdCast, 550 million migrating birds were detected across the country. The highest concentration of those birds was seen over Wisconsin.
Local perspective:…