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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 Name Statussort descending Priority Counties IBA Criteria
Santa Cruz Basin 120W34N Identified Global
Bolsa Chica Identified Global
Castle Rock Identified Global
False Cape Rock Identified Global
False Klamath Identified Global
Spooner's Cove Identified Global
Steamboat Rock Identified Global
Trinidad Complex Identified Global
San Pablo Bay Marine Identified Global Marin, Solano, Sonoma
San Francisco Bay - Southern Marine Identified Global Alameda, San Mateo
Cape Mendocino Grasslands Recognized State Humboldt, Mendocino D1
Clear Lake (Lake Co.) Recognized State Lake D1, D4ii
Del Norte Coast Recognized Global Del Norte D1, D4i, D4ii, D4v
Humboldt Bay Recognized Global Humboldt D1, D4i, D4ii, D4v, D5
Humboldt Lagoons Recognized Global Humboldt D4i, D4ii
Mendocino Coast Recognized State Mendocino D1
Napa Lakes Recognized State Napa, Solano, Yolo D1
Seiad Valley Recognized State Siskiyou D1, D5
Big Valley - Ash Creek Recognized State Lassen, Modoc D1, D4i, D4ii
Butte Valley Recognized State Siskiyou D1, D4i, D4ii, D4v


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