If you’ve done much mountain hiking, you’ve probably seen these little guys climbing among the boulders.
But the American Pika is in trouble. According to the Center For Biological Diversity, the so-called “boulder bunny” is in danger of going extinct because of global warming.
The pika thrives in the cold temperatures of the high elevations of the Western Mountains. Researchers say global warming is shrinking their habitat, forcing them to move to higher elevations where it’s still cool enough for them to survive. It’s estimated that a third of pikas in Oregon and Nevada are have already disappeared.

Courtesy Montana Fish and Wildlife
“As temperatures rise, pika populations at lower elevations are being driven to extinction, pushing pikas further upslope until they have nowhere left to go,” says Shaye Wolf, a biologist with the Center for Biological Diversity.
Pikas are also disappearing on the southern end of their range in New Mexico, Utah and California.
Which is why the Center and other environmental groups are pleased to see that the U.S. Fish and Wildlife Service says it will now study whether the pika should be added to the endangered species list.
The decision is significant because Fish and Wildlife will investigate findings that global warming has a role in the pika’s decline. If it agrees, then the pika would become the first mammal outside of Alaska to be listed because of climate change. Greg Loarie, an attorney with the legal group Earthjustice says, “The pika’s shrinking habitat is a harbinger of what may happen to many species if we don’t address global warming now.”
Pikas are small, growing to about 8 inches long and are related to rabbits. Their fur coats do such a good job of keeping them warm, that they can survive winters in the high elevations without hibernating. But that makes them especially vulnerable to global warming. Even brief periods of temperatures reaching 78 degrees or higher can overheat and kill them.
Today’s announcement by Fish and Wildlife means it has to make a decision on listing the pika by February of 2010.