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BBS Route · California · BCR 32

Lake Cachuma Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 97 species recorded across 28 survey years, still active.

97Species RecordedSpecies recordedDistinct species detected on standard-protocol BBS runs here across all years on record — a measure of survey breadth, not a complete checklist.Full methodology →
28Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–2016Span
4Observers

Bird Species Found on California Lake Cachuma

Top 40 of 97 species by most recent count. Each links to its species trend.

Species recorded on the Lake Cachuma route.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →History
WrentitSylviidae762016+82%1974
Spotted TowheePasserellidae612016+73%1974
California Scrub-JayCorvidae482016+30%1974
Ash-throated FlycatcherTyrannidae392016+440%1974
California ThrasherMimidae372016+23%1974
Mourning DoveColumbidae272016+49%1974
Anna's HummingbirdTrochilidae172016+112%1974
Bewick's WrenTroglodytidae152016+270%1974
Black-headed GrosbeakCardinalidae132016-54%1974
Black-chinned SparrowPasserellidae122014+320%1982
Acorn WoodpeckerPicidae112016+42%1974
PhainopeplaPtiliogonatidae112016+263%1976
Nuttall's WoodpeckerPicidae102016+108%1974
Blue-gray GnatcatcherPolioptilidae102016+433%1974
Northern House WrenTroglodytidae82016-6%1974
House SparrowPasseridae81990n/an/a
American CrowCorvidae72016+183%1974
House FinchFringillidae62016-31%1974
White-throated SwiftApodidae62016-17%1976
Olive-sided FlycatcherTyrannidae52016-47%1974
Purple FinchFringillidae52016+211%1978
California TowheePasserellidae52016-32%1974
Oak TitmouseParidae52016-35%1974
European StarlingSturnidae52012-55%1975
Red-winged BlackbirdIcteridae51977n/an/a
Lazuli BuntingCardinalidae42016+150%1988
Yellow WarblerParulidae42016+0%1974
Band-tailed PigeonColumbidae42016+100%1976
Brewer's BlackbirdIcteridae41999-10%1976
Black-chinned HummingbirdTrochilidae42014-36%1979
Pine SiskinFringillidae41988+300%1980
Wilson's WarblerParulidae31974+200%1972
Downy WoodpeckerPicidae31997+25%1987
Hutton's VireoVireonidae32016+125%1980
Steller's JayCorvidae32016+20%1982
Rufous-crowned SparrowPasserellidae32016-17%1996
California QuailOdontophoridae22016-84%1974
Hooded OrioleIcteridae21972n/an/a
Song SparrowPasserellidae22003+0%1977
Cliff SwallowHirundinidae22016-76%1975

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.