BirdAnalyst
BBS Route · California · BCR 32

Adelaida Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 118 species recorded across 28 survey years, still active.

118Species 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 →
1970–2024Span
7Observers

Bird Species Found on California Adelaida

Top 40 of 118 species by most recent count. Each links to its species trend.

Species recorded on the Adelaida 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
Mourning DoveColumbidae622024-52%1973
House FinchFringillidae612024-69%1973
Acorn WoodpeckerPicidae472024-29%1973
European StarlingSturnidae442024-36%1973
Cliff SwallowHirundinidae402024-54%1973
Ash-throated FlycatcherTyrannidae362024-8%1973
California TowheePasserellidae332024-47%1973
Turkey VultureCathartidae322024+348%1974
California Scrub-JayCorvidae292024-25%1973
California QuailOdontophoridae282024-22%1973
Oak TitmouseParidae282024+15%1973
BushtitAegithalidae252024-10%1973
Western BluebirdTurdidae212024-54%1973
Red-winged BlackbirdIcteridae182024-95%1973
Spotted TowheePasserellidae182024-11%1973
Violet-green SwallowHirundinidae182024-72%1973
White-breasted NuthatchSittidae182024+79%1974
Brewer's BlackbirdIcteridae172024-86%1973
Hutton's VireoVireonidae152015+350%1976
Yellow-billed MagpieCorvidae142024-52%1973
Bullock's OrioleIcteridae132024-89%1973
Black-headed GrosbeakCardinalidae122024-79%1973
Orange-crowned WarblerParulidae112015+27%1975
Lesser GoldfinchFringillidae102024-75%1973
Ruddy DuckAnatidae102015+400%1988
Western KingbirdTyrannidae92024-46%1973
Common RavenCorvidae92024+100%1975
Eurasian Collared-DoveColumbidae92024-4%2019
Caspian TernLaridae81992n/an/a
Red-tailed HawkAccipitridae72024+38%1973
Great Horned OwlStrigidae72024-35%1973
Anna's HummingbirdTrochilidae72024+140%1973
Northern Rough-winged SwallowHirundinidae71999+25%1973
WrentitSylviidae72024-36%1973
Red-breasted NuthatchSittidae71975n/an/a
Vaux's SwiftApodidae71977n/an/a
MallardAnatidae62024-43%1974
American CrowCorvidae62023-78%1973
Northern PintailAnatidae61974n/an/a
Barn SwallowHirundinidae52024+300%1978

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