Sometimes, nature's surprises come with wings. In a new study, scientists have pulled from a 35-year dataset to examine ...

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

The natural phenomenon of the iconic monarch butterflies migrating south for the winter is a fascinating one - and it's one ...

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

This year the organization counted 9,119 monarchs, the second-lowest total since tracking began in 1997. The organization has ...

Thogmartin and other researchers have evaluated more than 200 scenarios for restoring greater than 1.3 billion stems of ...

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

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

Monarch butterflies in the western U.S. have dropped to just 9,119 this year. In 2023, the count was 233,394, meaning a 96% decline.

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

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

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