See what a pearl crescent butterfly and caterpillar looks like, and learn which flowers will attract them to your garden.

Attract the elegant zebra swallowtail butterfly to your yard by growing nectar plants. Also discover the host plant for the ...

The Xerces blue butterfly went extinct along the San Francisco coast some 80 years ago. But scientists have identified a ...

A study compiled data from more than 76,000 butterfly surveys across the continental U.S. The declines seen in the last 20 ...

We have more data on butterflies because they're so easy to count. "They're really easy to identify on the wing," Edwards said. "I've done wasp studies where you have to catch them and take them ...

The California Academy of Sciences used genetic testing to identify a blue butterfly species similar to the Xerces species ...