The number of monarch butterflies spending the winter in the western United States dropped dramatically this year even as ...

The U.S. Fish and Wildlife Service is moving to list the monarch butterfly, which can be found throughout Arizona, as a threatened species under the Endangered Species Act. Experts say the ...

The butterflies had some trouble there and then some pretty extreme heat in Arizona,” says Steve Drew, who lives in Canada. Park officials say that since the peak season for butterflies is over ...

While Arizona is famously named the Grand Canyon state because of the natural wonder (which has one of the most sought-after bucket list hikes in the U.S.), this vibrant, diverse region is so much ...

In 2023, more than 16,000 butterflies were counted at one local grove. The most recent count was a tiny fraction of that.