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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
Yolo Bypass Area Recognized Global Sutter, Yolo D1, D4i, D4ii, D4v
Vandenberg Air Force Base and Santa Ynez Estuary Recognized State Santa Barbara D1, D4i
Upper Pajaro River (Bolsa de San Felipe) Recognized State San Benito, Santa Clara D1, D4i
Trinidad Complex Identified Global
Topaz Lake Area Recognized State Mono D1
Tomales Bay Recognized State Marin D4i, D4ii, D4v, D5
Tijuana River Reserve Recognized State San Diego D1, D4i, D5
Tehachapi Mountains Recognized Global Kern D4i
Taft Hills Recognized State Kern, San Luis Obispo D4i
Surprise Valley Recognized State Lassen, Modoc D1, D4i, D4ii, D4v
Suisun Marsh Recognized Global Contra Costa, Solano D1, D4i, D4ii, D4v
Stone Lakes Area (NWR) Recognized State Sacramento, San Joaquin D4ii, D4v
Steamboat Rock Identified Global
Spooner's Cove Identified Global
Southern Sierra Desert Canyons Recognized State Inyo, Kern D1
Southern Orange County Preserves Recognized State Orange, Riverside, San Diego D1, D4i, D5
South Fork Kern River Valley Recognized Global Kern D1, D4i, D5
Skinner Reservoir Area Recognized State Riverside D1, D4i
Sierra Valley Recognized State Plumas, Sierra D1, D4i, D4ii, D5
Sierra Meadows - Southern Recognized State Fresno, Madera, Tulare, Tuolumne D4i


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