Each spring and autumn, billions of birds journey across North America to reach breeding grounds or winter havens.

When you look on the radar over the next few months, you might see some unexplained activity when the skies are clear. It isn ...

Add Yahoo as a preferred source to see more of our stories on Google. Right now hundreds of millions of birds are making their annual trek to settle down in their northern breeding grounds. As they ...

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Millions of birds are migrating through Wisconsin. The flocks are being picked up on weather radars, where they appear ...

Spring bird migration is visible on weather radar, with potentially hundreds of thousands of birds passing overhead at night. The Indiana Dunes Birding Festival, held May 15-18, offers opportunities ...

A surprising number of migrating birds are choosing to stop in metropolitan areas, researchers found, raising the stakes for urban conservation efforts.

Large clusters appearing on weather radars are likely massive flocks of migrating birds, not storms. A record-breaking 1.2 billion birds were estimated to be migrating in a single night during the ...

Large clusters appearing on weather radars are likely massive flocks of migrating birds, not storms. A record-breaking 1.2 billion birds were estimated to be migrating in a single night during the ...

More than 13 million birds are expected to fly south over Michigan Wednesday night, Sept. 9, amid fall migration.

The BirdCast Migration Dashboard, a live migration map provided by Cornell University's Lab of Ornithology, says Michigan's fall migration is reaching its peak time frame — from mid-September to ...