SAVING WESTERN BURROWING OWLS

Burrowing owls aren’t your average owls: They don’t live in trees, and they’re not nocturnal. They make their nests underground — usually in abandoned rodent burrows — and are active both day and night. But sprawl development reduced these charismatic owls’ breeding populations in California by more than 60 percent from the 1980s to the 1990s, and they’ve continued to decline everywhere in the state since then.

Background

Early accounts of western burrowing owls in California described them as one of the state’s most common birds. In the late 1860s, according to one ornithologist, “burrowing owls stood on every little knoll” around San Diego. As late as 1975, they were described as “bordering on ubiquitous” in Southern California. But by 2003, development had nearly eliminated breeding owls from the entire California coast and one-quarter of their former range in California. In addition to their homes being bulldozed and paved over for suburbs, malls, and farms, burrowing owls suffer habitat loss due to poorly sited solar energy infrastructure, and are killed by rodenticides, collisions with wind turbines and cars, and poisoning of ground squirrels the owls rely upon to excavate underground burrows for nesting and roosting.

Our Campaign

Following 14 years of unsuccessful efforts by the California Burrowing Owl Consortium to protect rapidly declining populations from development, in 2003 the Center and allies petitioned to protect the owls’ California population under the California Endangered Species Act. But the state caved to development and agricultural interests and refused to list the owls. After two more decades of statewide declines, we petitioned again in 2024. Burrowing owls have now been extirpated as a breeding species from 19 of the 51 California counties where they formerly occurred and are close to being wiped out in 10 more counties. This time the California Fish and Game Commission unanimously voted to protect western burrowing owls throughout California as a “candidate” species, the first step toward state protections.

The Center continues to protect western burrowing owls’ habitat from sprawl throughout the Southwest and California and to defend these birds against all other threats too, from fracking to freeways.

Check out our press releases to learn more about the Center’s actions to save western burrowing owls.

+ Natural History

Female burrowing owl and owlet athene cunicularia photo by Kevin Cole.