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 ...

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

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 ...

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

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 ...