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California IBA Contact

Andrea Jones

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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 descending Status Priority Counties IBA Criteria
Salt Spring Valley Recognized State Calaveras D1, D4ii
Salton Sea Recognized Global Imperial, Riverside D4i, D4ii, D4v
San Antonio Valley Recognized Global Monterey, San Luis Obispo D1
San Clemente Island Recognized Global Los Angeles D4i
San Diego Bay - South Recognized Global San Diego D4i, D4ii, D4v
San Diego Montane Forests (San Diego Peaks) Recognized State San Diego D4i
San Diego NWR Otay-Sweetwater Unit Recognized Global San Diego D4i
San Emigdio Mountains Recognized Global Kern, Santa Barbara, Ventura D1, D4i
San Francisco Bay - South Recognized State Alameda, San Mateo, Santa Clara D1, D4i, D4ii, D4v, D5
San Francisco Bay - Southern Marine Identified Global Alameda, San Mateo
San Jacinto Valley Recognized Global Riverside, San Bernardino D1, D4i, D4ii, D4v
San Joaquin Hills Recognized Global Orange D1, D4i
San Joaquin River - Lower (NWR) Recognized State San Joaquin, Stanislaus D1, D4i, D4ii
San Luis Rey River Recognized Global San Diego D1, D4i
San Mateo Coast, CA Identified Global
San Mateo, CA Recognized Global
San Mateo/Monterey, CA Identified Global
San Miguel Island, CA Identified Global
San Pablo Bay Marine Identified Global Marin, Solano, Sonoma
San Pablo Bay Wetlands Recognized Global Marin, Napa, Solano, Sonoma D1, D4i, D4ii, D4v