• 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 descending Status Priority Counties IBA Criteria
Butte Valley Recognized State Siskiyou D1, D4i, D4ii, D4v
Byron Area Recognized Global Alameda, Contra Costa, San Joaquin D4i, D4ii
Camp Pendleton Recognized Global Orange, Riverside, San Diego D4i
Cape Mendocino Grasslands Recognized State Humboldt, Mendocino D1
Carmel River/Point Lobos Recognized State Monterey D1
Carrizo Plain Recognized Global Kern, San Luis Obispo D1, D4i, D4ii, D4v
Castle Rock Identified Global
Central CA MAMU Identified Global
Central Orange County Preserves (Orange County Wilderness Parks) Recognized State Orange, Riverside D1, D4i
Channel Islands - Northern Recognized Global Los Angeles, Santa Barbara, Ventura D1, D4i
Cima Dome Recognized State San Bernardino D4i
Clear Lake (Lake Co.) Recognized State Lake D1, D4ii
Colorado Desert Microphyll Woodlands Recognized State Imperial, Riverside, San Bernardino D4i
Concord Marshes Recognized State Contra Costa D1, D4i, D4ii
Corte Madera Marshes Recognized State Marin D4i, D4v
Cosumnes River Watershed - Lower Recognized State Sacramento, San Joaquin D1, D4i, D4ii
Crowley Lake Area Recognized Global Mono D1, D4i, D4ii
Cuyama Valley Recognized State San Luis Obispo, Santa Barbara D1
Deep Springs Valley Recognized State Inyo D1
Del Norte Coast Recognized Global Del Norte D1, D4i, D4ii, D4v