Just over 9,000 monarchs were counted in California last winter, the second lowest ever since the annual count began in 1997 ...

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

The number of monarch butterflies spending the winter in the western United States dropped dramatically this year even as ...

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

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

We know small populations are especially vulnerable to environmental fluctuations, and we think that’s what happened this ...

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

Hundreds of volunteers and partners participated in the 28th annual Western Monarch Count by attempting to identify all of ...

Growing milkweed from seed is one of the easiest ways to help declining monarch butterflies. In December 2024, the U.S. Fish ...

Not that long ago, monarch butterflies used to migrate in droves. However, over the last few decades, the number of these ...