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

This video depicts a tethered monarch butterfly in the flight simulator ... it quickly corrects its bearing to continue on a migratory flight path. Disclaimer: AAAS and EurekAlert!

Monarch butterflies are important culturally and ecologically across North America. Generations have watched in wonder as yellow-and-black striped caterpillars fold into green-and-gold chrysalises and ...

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.

The number of monarch butterflies spending the winter in the western United States dropped dramatically this year even as federal officials move to extend protections for the beloved pollinator ...

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 ...

The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in nearly three decades as pesticides, diminishing habitat and climate ...

A butterfly sits on a leaf at Monarch Grove Sanctuary in Pacific Grove on Nov. 10, 2021. Photo by Nic Coury, AP Photo For the past three years, more than 200,000 western monarch butterflies spent ...

Monarch butterflies are important culturally and ecologically across North America. Generations have watched in wonder as yellow-and-black striped caterpillars fold into green-and-gold chrysalises and ...