Before National Geographic published its famous August 1976 cover story detailing the search for the monarch butterfly’s wintering grounds, nobody knew where these strikingly beautiful creatures ...

In late 2024, a tagged monarch named Lionel migrated from New Jersey to Florida, logging thousands of detections along the ...

Biologists have attached tiny, solar transmitters to the monarch butterflies, allowing researchers and everyday visitors to ...

For years, home gardeners have been told to do one thing to save monarch butterflies: plant milkweed, the only plant monarch caterpillars eat. And for years, that’s what Linda Barber Auld, known as ...

SAN DIEGO — U.S. Fish and Wildlife Service has proposed listing monarch butterflies as a threatened species and has considered some possibly contradictory ways to protect them, Nicholas Storer, vice ...

About a week ago, several monarch caterpillars were busily munching on the native narrowleaf milkweed I’d planted in my backyard in the San Francisco Bay Area to provide habitat for the imperiled ...

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Nine monarch caterpillars that emerged late in the season would have faced certain death had an Evergreen Park man not stepped in.

Whether you’re a butterfly fanatic or simply interested in nature, the monarch butterfly is worth a study. Beautiful and serene, monarch butterflies have a unique lifespan. But how long do monarch ...

Professor Elizabeth Crone, Department of Evolution and Ecology, checks a non-native milkweed in the San Francisco Bay Area for monarch butterfly eggs and caterpillars. Known for long-distance ...