• 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 Name Status Prioritysort descending Counties IBA Criteria
Santa Ana River Valley Recognized Global Riverside, San Bernardino D4i, D4ii
Santa Clara River Valley Recognized Global Los Angeles, Ventura D4i
Pier 400 Tern Colony (formerly Terminal Island) Recognized Global Los Angeles D4i
Anza-Borrego Riparian Recognized Global San Diego D4i
East Mojave Peaks Recognized Global Inyo, San Bernardino D4i, D5
Edwards Air Force Base Recognized Global Kern, Los Angeles, San Bernardino D1, D4ii, D4v
Imperial Valley Recognized Global Imperial D4i, D4ii, D4v
Antelope Valley (Lancaster) Recognized Global Kern, Los Angeles D4i
Lower Colorado River Valley Recognized Global Imperial, Riverside, San Bernardino D1, D4i, D4ii, D4v
San Emigdio Mountains Recognized Global Kern, Santa Barbara, Ventura D1, D4i
Point Conception 120W34N Identified Global
Central CA MAMU Identified Global
Farallon Islands Pelagic Identified Global
Half Moon Bay, CA MAMU Identified Global
Klamath, CA MAMU Identified Global
Mendocino Coast Pelagic, CA Identified Global
Off Jasper Seamount, CA Identified Global
Palos Verdes Identified Global
Pelican Bay, CA MAMU Identified Global
Piedras Blancas, CA Identified Global