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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 Status Prioritysort descending Counties IBA Criteria
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
Ano Nuevo Area Recognized Global San Mateo, Santa Cruz D1
Big Sur Recognized Global Monterey D1, D4i, D5
Point Reyes - Outer Recognized Global Marin D4ii, D4v
Richardson Bay Recognized Global Marin D4ii
King City Grasslands (formerly Salinas River - Middle) Recognized Global Monterey, San Benito D1
San Antonio Valley Recognized Global Monterey, San Luis Obispo D1
San Pablo Bay Wetlands Recognized Global Marin, Napa, Solano, Sonoma D1, D4i, D4ii, D4v
Santa Lucia Peaks Recognized Global Monterey D4i
Byron Area Recognized Global Alameda, Contra Costa, San Joaquin D4i, D4ii
Carrizo Plain Recognized Global Kern, San Luis Obispo D1, D4i, D4ii, D4v
Grasslands Ecological Area Recognized Global Merced, Stanislaus D1, D4i, D4ii, D4v
Jepson Grasslands Recognized Global Solano D1, D4i
La Grange - Waterford Grasslands Recognized Global Calaveras, San Joaquin, Stanislaus, Tuolumne D1, D4i
Lone Willow Slough Recognized Global Madera D1
Crowley Lake Area Recognized Global Mono D1, D4i, D4ii
Mono Highlands Recognized Global Mono D4i
Baldwin Lake Recognized Global San Bernardino D4ii


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