Add Yahoo as a preferred source to see more of our stories on Google. Spring is here, which means hummingbirds are on their way back to the United States! If you're a fan of these pretty birds and are ...

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 ...

Spring is here, which means hummingbirds are on their way back to the United States! If you're a fan of these pretty birds and are intersted in knowing when you'll be able to see them, you're in luck ...

After the sun set on March 9, an estimated 11 million migratory birds took flight across America. It's the early rumblings of the annual spring migration, a period where many avian species will take ...

Breeding and the greening of the landscape are tied to another major spectacle of spring: the mass movements of animals as they take advantage of spring’s bounty. Meet the scientists who track the ...

Fewer monarch butterflies were spotted this spring, even as milkweed classes helped boost habitat and support future ...