This year’s count of 4.42 acres of occupied forest habitat is nearly twice as large as last year's, but eastern monarch ...

A new study has found that overall butterfly populations are declining across the United States. The study, which was ...

The population wintering in central Mexico's forests occupied 4.42 acres, up from 2.22 acres during the previous winter.

The monarch butterfly population has rebounded from a near record low number in 2024, according to the latest annual survey ...

The U.S. Fish and Wildlife Service’s proposed listing of the monarch butterfly as a threatened species would allow crop ...

Butterfly Pavilion’s new exhibit highlights the cultural connections between humans and their invertebrate neighbors.

Public comments on the proposed Endangered Species Act listing for monarch butterflies are open until until March 12.

A study, published Thursday in the journal Science, found that 22% of butterflies in the United States disappeared between ...

MEXICO CITY (AP) — The number of monarch butterflies wintering in the mountains west of Mexico City rebounded this year, ...

Butterfly populations across the United States are declining, a trend reflected in the Western monarch butterfly population ...

Mexican officials and environmental groups say better weather conditions on the butterflies’ migration route caused the ...

The monarch butterfly is one of many insects threatened by human-caused means, but Monarch Watch may have a solution.