An annual count of monarch butterflies conducted by the United States and Mexico as the insects migrate back and forth over ...

A new report from WWF‑Mexico shows that the endangered migratory eastern monarch butterfly is showing promising signs of ...

The insects covered its largest area since 2018, despite threats from habitat loss, climate crisis and pesticides ...

Monarch butterflies just scored a modest win in Mexico's forests. A new World Wildlife Fund Mexico survey finds that eastern ...

The Center for Biological Diversity and Center for Food Safety are suing U.S. Fish and Wildlife to fast-track protections for ...

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 ...

WASHINGTON (AP) — The monarch butterfly fluttered a step closer to extinction Thursday, as scientists put the iconic orange-and-black insect on the endangered list because of its fast dwindling ...

In the forests of central Mexico, the number of monarch butterflies grew for the second year in a row, suggesting the ...

America's beloved monarch butterfly is facing possible listing as a threatened species. The Trump administration is expected to announce this week if it supports protecting the monarch under the ...

SAN FRANCISCO (CN) — Two nonprofits sued the Trump administration Thursday to put pressure on officials regarding federal protections for monarch butterflies, a species that has seen rapid decline in ...