Monarch butterflies now confront the Trump administration with its first big Endangered Species Act test, as a lively public ...

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

One butterfly comes so far, and then it will stop to reproduce, and then the offspring from that monarch will emerge from the ...

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

The population of the eastern monarch butterflies in Mexico doubled this past winter season, according to a WWF survey.

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

A Pennsylvania butterfly farmer says listing the monarch as a threatened species could do more harm than good.

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

CINCINNATI (WKRC) - A new study found that butterflies are disappearing from the United States at an alarming rate, with most ...

The number of monarch butterflies wintering in the mountains west of Mexico City, rebounded this year, doubling the area they ...

Monarch butterflies wintering in Mexico have rebounded this year, with the number doubling the area they covered in 2024 ...