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

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

Unless something changes, and changes soon, the monarch butterfly faces extinction. But there is something you can do to help ...

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

creating a dataset that made it possible for a Montana State University ecologist to pinpoint how climate variations have affected the migratory patterns of Camp Dodge's monarch butterfly ...

However, in late 2023, the butterfly’s status was reassessed and listed instead as vulnerable. This change in terminology came not from an increase in monarch numbers, but from a shift in the ...

The number of monarch butterflies wintering in the mountains west of Mexico City, rebounded this year, doubling the area they covered in 2024 despite the stresses of climate change.

Their adventure could help save the iconic monarch butterfly. If you see a butterfly with orange wings, it's most likely a monarch. They may seem delicate, but every winter, hundreds of them fly ...