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

Scientists estimate there needs to be a minimum of 15 acres of butterflies for the species to be out of the danger zone of ... and concerned individuals. We took our first big action for monarchs in ...

It’s a big day for insects. The U.S. Fish and Wildlife Service announced Tuesday that it is proposing the monarch butterfly for threatened species status under the Endangered Species Act ...

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

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

Adult monarch butterflies are large with bright orange wings, white spots and black veins and boarder. The U.S. Fish and Wildlife Service is recommending federal protections for the species as factors ...

The monarch butterfly population spending the winter in the western United States has declined to its second-lowest level in nearly three decades.