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 ...

Like its cousins the Mexican and northern spotted owls, the California spotted owl is a bellwether of old-growth forests. This owl's classic four-note call was once commonly heard throughout the big ...

Most reports are misidentified pine warblers or yellow-breasted chats. Rare in southernmost Florida, casual in southern California, southern Texas. Vagrant: very rare in the West, more in spring ...