The Center for Biological Diversity and the Maricopa Audubon Society have sued the U.S. Fish and Wildlife Service for violating the Endangered Species Act by failing to protect habitat essential to ...

The Mount Graham red squirrel population declined slightly in the past year despite a new counting method that more accurately locates the population, state officials said. The 2023 survey of the ...

In 2017, a wildfire raged across a drought-sick mountain in Southern Arizona and nearly wiped out a subspecies of red squirrel found nowhere else on the planet. In the aftermath of the Frye Fire — ...

TUCSON, Ariz.— A federal judge has ordered the Trump administration to make a long-overdue decision on whether to expand critical habitat for Arizona’s highly endangered Mount Graham red squirrels.

For over 25 years, the endangered Mount Graham red squirrel has been quietly battling population decline atop one of Arizona’s tallest mountains. Endemic to the Pinaleño Mountains in Southern Arizona, ...