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

The U.S. Fish and Wildlife Service is opening a second comment period as they work to list the monarch butterfly on the ...

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

Say the word “butterfly” to any younger Generation Xer, millennial, or older Zoomer, and any number of songs may immediately ...

The high-altitude forest here is the perfect microclimate for the species, and it’s one of the few places in the world where ...

This year’s count of 4.42 acres of occupied forest habitat is nearly twice as large as last year's, but eastern monarch butterfly populations remain ... Monarch butterflies face several threats: ...