BirdAnalyst
BBS Route · California · BCR 32

Oneals Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 112 species recorded across 41 survey years, still active.

112Species 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 →
41Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–2024Span
12Observers

Bird Species Found on California Oneals

Top 40 of 112 species by most recent count. Each links to its species trend.

Species recorded on the Oneals 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
Tricolored BlackbirdIcteridae52902011+680%1995
European StarlingSturnidae532024-65%1974
Western KingbirdTyrannidae502024-5%1974
Ash-throated FlycatcherTyrannidae452024+146%1975
Acorn WoodpeckerPicidae412024-28%1974
Mourning DoveColumbidae402024-25%1974
House FinchFringillidae372024+161%1974
Cliff SwallowHirundinidae372024-65%1974
Red-winged BlackbirdIcteridae212024+122%1974
Red-tailed HawkAccipitridae182024+131%1974
Common RavenCorvidae162024+460%1982
BushtitAegithalidae142024-27%1974
House SparrowPasseridae132024+378%1976
Purple FinchFringillidae101973n/an/a
California GullLaridae102009+400%1999
California QuailOdontophoridae92024-22%1974
Bullock's OrioleIcteridae82024-57%1974
California TowheePasserellidae82024+200%1974
Northern MockingbirdMimidae82024+0%1974
Wild TurkeyPhasianidae82023+67%2005
Eurasian Collared-DoveColumbidae82024+61%2017
Black PhoebeTyrannidae72024+350%1975
White-breasted NuthatchSittidae72024+77%1975
Yellow-billed MagpieCorvidae62005-19%1974
Western BluebirdTurdidae62024+91%1975
Tree SwallowHirundinidae62024+186%2006
American White PelicanPelecanidae62016+20%2015
Turkey VultureCathartidae52024-6%1974
California Scrub-JayCorvidae52024-68%1974
Violet-green SwallowHirundinidae52023+29%1975
Brown-headed CowbirdIcteridae52024-71%1976
White-tailed KiteAccipitridae51983+400%1975
Steller's JayCorvidae41973n/an/a
Western Wood-PeweeTyrannidae42005+17%1995
Double-crested CormorantPhalacrocoracidae42000n/an/a
Barn SwallowHirundinidae32024-92%1974
Yellow WarblerParulidae32009+20%1994
Bewick's WrenTroglodytidae32024-21%1978
Great EgretArdeidae32024+20%1998
American KestrelFalconidae22024-48%1975

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