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

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

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

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

Overwintering populations of monarch butterflies in California have reached a near all-time low since records began, conservationists announced on Thursday. The ...

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

The Xerces Society, a conservation group dedicated to invertebrate protection, announced disheartening news for insect ...

More than 500 people braved the cold with their monarch butterfly signs — symbols of immigration, freedom, and movement — to ...

Western Monarch Butterflies have reached record low numbers along the Central Coast, according to the U.S. Fish and Wildlife Service.

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