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 ...

This week, millions of birds will fly through the night skies above the Chicago area as they travel from their winter homes down South to their summer breeding grounds in Canada and northern states ...

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 ...

Known for their distinct orange hue and white spots lining their wings, the monarch butterfly is easily one of the most recognizable insects. Right now, the monarchs are making their spring migration, ...

Migration routes are ingrained in many bird species. This helps them to not only return to known nesting sites, but also to ...