The Xerces Society for Invertebrate Conservation says, along the California coast, 4.5 million monarchs overwintered in the ...

Authorities are now awaiting autopsy results to determine the precise cause of death, considering the possibility that toxins ...

Study warns that climate change is rapidly shrinking mountain habitats, threatening two-thirds of butterfly species with extinction by 2070.

The outlook for butterflies in the U.S. seems as fragile as their delicate wings, as a study reveals the population of 554 ...

The Trump administration said Tuesday that it is reconsidering adding protections to the monarch butterfly as a threatened species under the Endangered Species Act. The U.S. Fish and Wildlife ...

A new study compiling butterfly surveys across the country found a 22% overall decline, while seven species found in Maine declined by more than 50%. An error has ...