By any measure, the revival of the bald eagle stands as one of the great environmental triumphs in conservation history. In ...

Researchers collected several butterflies from Alberta, analyzed their DNA and compared the results to other butterfly species, the study said. Looking at the results, researchers realized they’d ...

Can you see the butterfly flapping its wings? Can you line up the dates? Leicester needed a new manager just as Van ...

Can you see the butterfly flapping its wings? Can you line up the dates? Leicester needed a new manager just as Van ...

The annual migration of monarch butterflies is one of science's great mysteries: millions of monarchs know the correct path ...

For thousands of years, millions of monarch butterflies have migrated from the northern U.S. and Canada to Mexico for the winter. But exactly how they know where to go is still a mystery.

Monarchs traveled to a remote part of Mexico, a journey they've made for thousands of years, and wintered there. Now tens of millions of the butterflies are on an epic aerial journey back north.

The Xerces Society for Invertebrate Conservation says, along the California coast, 4.5 million monarchs overwintered in the ...

The outlook for butterflies in the U.S. seems as fragile as their delicate wings, as a study reveals the population of 554 species plunged by 22% in 20 years.

Although the researchers – who collaborated across the country – saw a 22% decline in the total number of butterflies, they ...

The butterfly takes less than a minute to emerge from its chrysalis. While its wings are fully developed, a swallowtail can’t fly immediately and must wait several hours for its wings to harden. By ...