800 million birds are expected to migrate across the U.S. this weekend

Approximately 800 million birds will migrate across the United States this weekend.

Bird migration is a big topic this time of year as temperatures turn cooler and birds fly south.

One of the ways to monitor is BirdCast, which is designed to track migration patterns and light pollution. And weather is a factor – not just if the forecast is good or not.

BirdCast says they use weather radar as one of the ways they detect and predict the numbers and flight directions of our flighty friends.

On Friday night, folks should expect a lot of activity from the West Coast to the Rockies, and east of the Mississippi ...