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

Each year, millions of monarch butterflies travel thousands of miles across North America to escape the cold and find ...

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 ...

Monarch butterflies depend on human intervention to thrive in the wild, as highlighted by the traveling exhibit "Monarchs and ...

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

A winter count of visiting monarch butterflies found a steep drop from previous years, which has scientists worried about the ...

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

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

At a festival last September in Minneapolis meant to celebrate the monarch butterflies' migration before winter ... from an egg all the way into a butterfly, and if those change during certain ...

On Tuesday, the Butterfly Pavilion in Westminster and the Government of Mexico are joining forces to protect one of North ...

Scientists are grappling with a stark population decline of the western monarch butterfly after the species’ numbers hit a ...