The number of monarch butterflies spending winter in the western U.S. dropped dramatically this year, despite moves to extend ...

The iconic monarch butterfly is declining across North America. You can help make a difference by providing the species with ...

Are monarch butterflies endangered? Monarch population numbers are falling and it's clear that these butterflies need our ...

A group of researchers in Germany created 3D printed wings inspired by the monarch butterfly. These robotic wings are ...

Newly released data shows that the number of monarch butterflies migrating to California this winter is near-record low. "We ...

This winter, volunteers from the Xerces Society, a nonprofit environmental group, tallied just 9,119 western monarchs — a ...

The Western population of the monarch butterfly has declined to a near-record low with fewer than 10,000 found living in ...

The U.S. Fish and Wildlife Service is taking steps to list monarch butterflies as threatened species and designate seven ...

In 2023, more than 16,000 butterflies were counted at one local grove. The most recent count was a tiny fraction of that.

Once, millions of monarchs wintered in California. But climate change, habitat loss, widespread pesticide use and disease ...

The number of monarch butterflies in California is in sharp decline this year. This is the second-lowest population recording ...

On Thursday, invertebrate conservation group the Xerxes Society released the results of their 28th annual Western Monarch ...