The mountain yellow-legged frog was once the most abundant amphibian in Southern California's Sierra Nevada and Transverse Ranges. Just decades ago, it was hard to walk around many of California's ...

California's Sierra Nevada mountains are the state's largest mountain range, full of outdoor adventure and picturesque destinations. Running 400 miles from north to south, and varying between 50 ...

These secretive foxes live in remote, high mountains in the Sierra Nevada and Cascade ranges of California and Oregon. The Service is designating only the Sierra Nevada population, which ranges from ...