The San Francisco garter snake has been dubbed “the most beautiful serpent in North America,” and it's arguably one of the most endangered species, too. All known populations of this fantastically ...

Oases in the desert, Southwestern streams are among the most delicate ecosystems on the planet. In these shallow, ephemeral waters, species like the Mexican garter snake once carved out a precarious ...

The year was 2015 and, as biologist Michael Lester recalls, he was walking a familiar trail near the Colorado River looking for birds when he saw a long object on the ground and thought, "There wasn’t ...

For this humble brown reptile to rebound as successfully as other endangered species, conservation history shows that it will take combined efforts from the state, zoo and wildlife refuges, and ...

Two New Mexico river snake species nearing extinction were the subject of a lawsuit filed by a conservation group challenging reductions in habitat land set aside by the federal government for both ...

An undeveloped parcel of land owned by San Francisco International Airport is home to a thriving population of an endangered snake species, a recent study revealed, CBS San Francisco reports. The ...