Monarch butterflies undergo a complete metamorphosis, or a four-part life cycle. Life begins as a tiny egg, which soon hatches an elfin larva, or caterpillar. The caterpillar does much of the heavy ...

This is an updated version of a story first published on April 20, 2025. The original video can be viewed here. Earlier this year we reported on one of the most remarkable and mysterious migrations 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 ...

Monarch butterflies follow a two-way migration pattern to avoid winter. A two-way migration pattern is when an insect or animal migrates between two places or regions for any given reason. For the ...

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 ...

SPRINGFIELD, Mo. — The end of summer and the beginning of fall is a unique time in Missouri when we see more pollinators as they migrate south before it gets cold. One of those pollinators is the ...

The flapping wings of millions of monarch butterflies at the Monarch Butterfly Biosphere Reserve in Michoacán, Mexico, create a fluttering sound that Alfonso Alonso describes as “magical.” The ...