List of birds of California

This list of birds of California is a comprehensive listing of all the bird species seen naturally in the U.S. state of California as determined by the California Bird Records Committee (CBRC).^[1] Additional accidental and hypothetical species have been added from different sources.

As of August 5, 2022, there are 681 species on the CBRC list. Two of these species are endemic, 13 were introduced by humans (directly or indirectly), one species has been extirpated, and one was extirpated in the wild but its reintroduction is in progress. Five additional species have been documented but "the CBRC could not reach a consensus as to whether records of these species involved true naturally occurring vagrants or escapes from captivity."

The following tags note species in each of those categories and one additional category:

• (En) Endemic to California
• (I) Introduced but now established in California
• (Ex) Extirpated from California
• (RI) Reintroduction in progress - not yet established
• (*) California Bird Records Committee Review Species (200 species; in general, review species average four or fewer occurrences per year in California over the most recent ten-year period.)
• (UO) Of unknown origin

Individuals or even flocks of many additional species have been recorded in California but these birds are assumed to be deliberately released or escaped from captivity. In the absence of evidence of wild origin, they are not included in the CBRC list.

This list is presented in the taxonomic sequence of the Check-list of North and Middle American Birds, 7th edition through the 623rd Supplement, published by the American Ornithological Society (AOS).^[2] Common and scientific names are also those of the Check-list, except that the common names of families are from the Clements taxonomy because the AOS list does not include them.