| CALIFORNIA SPOTTED OWL } Strix occidentalis occidentalis   | RANGE: The Sierra Nevada and southern California  mountain ranges  STATUS: Not listed under the Endangered Species Act; NatureServe calls the  species Vulnerable. THREATS: Logging,  urbanization, wildfire, and competition from the invasive barred owl  Like its  cousins the Mexican and northern spotted owls, the California spotted owl lives  in ancient forests whose best owl habitat is rapidly being destroyed by  logging. This owl’s classic four-note call was once heard often throughout the  big trees of the Sierra Nevada and southern California ranges, including the  giant sequoias of Kings Canyon National Park, but logging, urban sprawl, and  recent encroachment by the barred owl — an aggressive relative that has been  muscling spotted owls out of the woods from British Columbia to the Sierra —  are silencing it. The Center for Biological Diversity and our allies have been  advocating for Endangered Species Act protection for the owl since 2000. LEARN  MORE ABOUT THE CALIFORNIA SPOTTED OWL  |