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

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

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

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

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

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

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

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 ...

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

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

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