• View Another State

California IBA Contact

Andrea Jones

More info


California IBAs by Type

IBA Priority Number Acres
Global 82 13,954,543
State 95 5,757,316
Total 177 19,711,859

California's Important Bird Areas Program, launched in 1996, surged forward in 2000. Beginning in 2001, dozens of California field ornithologists, representing a broad range of agencies and affiliations, were interviewed and questioned about sites significant to bird populations in the state. These interviews, in combination with collecting data from around the state, and review by a technical committee, led to 145 sites becoming designated as Important Bird Areas. In 2004, Audubon published the book "Important Bird Areas of California" by Daniel S. Cooper. This network of IBAs is the cornerstone of Audubon's conservation activities in California. Their identification is guiding conservation at the chapter, state, and national levels of Audubon, and serves to showcase noteworthy habitat to other interested groups and agencies. In 2006, Audubon California prioritized IBAs based on bird value, degree of threat, and availability of conservation opportunities, and works with local chapters to conserve these sites and to develop systems to monitor their bird life. 

Audubon California has partnered with Cornell Lab of Ornithology and Point Blue Conservation Science to develop California eBird (https://ebird.org/region/US-CA) to gather bird abundance and distribution data at IBA sites into an online database. To assist with local planning efforts, Audubon California has developed maps of all IBA sites in California with the assistance of California Polytechnic Institute. We used ArcGIS to map sites and conduct analyses on habitat types, protection status, size, and other factors of interest. Visit our website to learn more about our program: http://ca.audubon.org/!
Text for California IBAs excerpted from "Important Bird Areas of California". Citation: Cooper, D.S. 2004. Important Bird Areas of California. Audubon California. 286 pp. Available (online) at: http://iba.audubon.org/iba/stateIndex.do?state=US-CA . Retrieved (insert date). 
Site Namesort ascending Status Priority Counties IBA Criteria
Bridgeport Valley Recognized State Mono D4ii
Bolsa Chica Identified Global
Bolinas Lagoon Recognized State Marin D4ii, D4v, D5
Bodega Harbor Recognized State Marin, Sonoma D4ii, D4v, D5
Big Valley - Ash Creek Recognized State Lassen, Modoc D1, D4i, D4ii
Big Sur Recognized Global Monterey D1, D4i, D5
Big Morongo Canyon Recognized State Riverside, San Bernardino D1, D4i
Benicia State Recreation Area Recognized State Solano D1, D4i, D4ii
Bautista Creek Recognized State Riverside D1
Ballona Wetlands (Ballona Valley) Recognized State Los Angeles
Baldwin Lake Recognized Global San Bernardino D4ii
Argus Range - Southern Recognized State Inyo D4i
Anza-Borrego Riparian Recognized Global San Diego D4i
Antelope Valley (Lancaster) Recognized Global Kern, Los Angeles D4i
Ano Nuevo Area Recognized Global San Mateo, Santa Cruz D1
Alameda Wildlife Refuge Recognized State Alameda, San Francisco D4i, D5
Aguanga Area Recognized State Riverside, San Diego D1
Adobe Valley Recognized State Mono D1


Displaying 161 - 178 (of 178)

Stay abreast of Audubon

Our email newsletter shares the latest programs and initiatives.