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

Largest butterfly clusters observed in Santa Cruz ... observed across multiple sites within the park, according to Xerces. Natalie Johnston, the community science coordinator at Pacific Grove's ...

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

The Ellwood Mesa Butterfly Grove used to be California's largest wintering site for monarch butterflies, but in 2024, only 30 butterflies were counted.

The count of 9,119 butterflies this winter is a sharp decline from 200,000 reported in the past three years, but slightly up from 2,000 monarch reported in 2020.

Growing milkweed from seed is one of the easiest ways to help declining monarch butterflies. In December 2024, the U.S. Fish ...

Much of California’s Habitat for the migratory Monarch butterfly is gone. Wild fires have decimated groves of trees and plants where the Western Monarch winters. The typical flight plan of the Monarch ...

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

While scientists were able to save and move some creatures in the aftermath, researchers are worried about the prospects for ...

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.

Monarch butterflies overwintering along the California coast have declined by 96% in a year, with habitat loss, pesticides and extreme heat contributing to their second-lowest population in nearly ...