BirdAnalyst
BBS Route · California · BCR 32

Oak Grove Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 107 species recorded across 47 survey years, still active.

107Species 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 →
47Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2024Span
3Observers

Bird Species Found on California Oak Grove

Top 40 of 107 species by most recent count. Each links to its species trend.

Species recorded on the Oak Grove 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
California TowheePasserellidae732024+429%1970
California QuailOdontophoridae572024+189%1971
House FinchFringillidae562024+25%1970
Common RavenCorvidae482024+270%1970
Bewick's WrenTroglodytidae45202421×1971
Spotted TowheePasserellidae422024+733%1972
House SparrowPasseridae342024+606%1981
Eurasian Collared-DoveColumbidae282024+122%2012
Yellow-headed BlackbirdIcteridae251984n/an/a
Lesser GoldfinchFringillidae202024+414%1979
Ash-throated FlycatcherTyrannidae192024+733%1971
Brewer's BlackbirdIcteridae182024-16%1970
Cassin's KingbirdTyrannidae182024+875%1974
Northern MockingbirdMimidae182024+917%1980
Mourning DoveColumbidae172024-3%1970
California Scrub-JayCorvidae172024+246%1970
WrentitSylviidae172024+538%1971
California ThrasherMimidae162024+90%1970
Black-headed GrosbeakCardinalidae152024+411%1970
European StarlingSturnidae152024+300%1971
Hooded OrioleIcteridae122024+460%1974
PhainopeplaPtiliogonatidae102024+178%1970
Lawrence's GoldfinchFringillidae102024+111%1978
Lazuli BuntingCardinalidae92023+567%1982
Red-tailed HawkAccipitridae82024+7%1971
Western MeadowlarkIcteridae72024+113%1970
Costa's HummingbirdTrochilidae72024+300%1978
Black-chinned SparrowPasserellidae72024+225%1979
Western KingbirdTyrannidae62023+129%1977
BushtitAegithalidae62024+188%1972
Say's PhoebeTyrannidae62024+300%1979
Band-tailed PigeonColumbidae61973n/an/a
Northern House WrenTroglodytidae52024+167%1970
Bell's SparrowPasserellidae52024+167%1977
Anna's HummingbirdTrochilidae42024+50%1970
Gambel's QuailOdontophoridae41971-93%1970
Rufous-crowned SparrowPasserellidae42024+20%1993
Rock WrenTroglodytidae42024+40%1993
Song SparrowPasserellidae42024+20%1983
American CrowCorvidae32023-46%1971

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