Spring migration is hitting its peak, with hundreds of millions of birds taking to the skies in a massive seasonal journey toward warmer weather and breeding grounds this May. On May 4 at 1:10 a.m., ...

Add Yahoo as a preferred source to see more of our stories on Google. It's a bit early to start seeing hummingbirds in New York, but they have begun their spring migration into the southern U.S.

SAN ANTONIO — Each spring, one of North America’s most remarkable wildlife events unfolds as the monarch butterfly begins its migration across the United States. During March, April, and May, millions ...