I’m at almost 11,500 feet, hiking to our research sites in the Front Range when I hear chirping and turn to see a small mammal scurrying across the rocks. The large, rounded ears are a dead giveaway: ...

The American pika — a small, herbivorous, conspicuously cute mammal related to rabbits and hares — is adapted to the cold climate in high-elevation boulder fields and alpine meadows in the mountains ...

Hikers in the Rocky Mountain West have a new tool to help scientists monitor pikas, animals known for looking a bit like stuffed animals and loudly squeaking whenever someone invades their alpine ...

A tiny mammal that can't handle warm weather could become the first animal in the lower 48 states to get Endangered Species Act protection primarily because of climate change. The U.S. Fish and ...

MULTNOMAH COUNTY, Ore. — In the Columbia River Gorge, between Angel’s Rest and Viento State Park, you might just hear a faint squeak echoing from the rocks. That sound? It could be a pika — a small, ...