BirdAnalyst
BBS Route · California · BCR 32

Adelaida Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 118 species recorded across 29 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 →
29Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1970–2025Span
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
California QuailOdontophoridae792025+17%1973
Acorn WoodpeckerPicidae722025-38%1973
Mourning DoveColumbidae662025-59%1973
House FinchFringillidae592025-75%1973
European StarlingSturnidae402025-36%1973
California Scrub-JayCorvidae312025-35%1973
Oak TitmouseParidae292025-8%1973
Red-tailed HawkAccipitridae282025+104%1973
Eurasian Collared-DoveColumbidae272025+4%2019
Turkey VultureCathartidae222025+326%1974
Ash-throated FlycatcherTyrannidae222025-6%1973
Cliff SwallowHirundinidae222025-59%1973
Yellow-billed MagpieCorvidae202025-46%1973
Red-winged BlackbirdIcteridae182024-95%1973
Western BluebirdTurdidae182025-46%1973
Violet-green SwallowHirundinidae172025-75%1973
Western KingbirdTyrannidae162025-49%1973
Hutton's VireoVireonidae152015+350%1976
Tree SwallowHirundinidae142025-38%1995
Brewer's BlackbirdIcteridae132025-85%1973
Common RavenCorvidae132025+136%1975
Black-headed GrosbeakCardinalidae122024-79%1973
California TowheePasserellidae112025-45%1973
Orange-crowned WarblerParulidae112015+27%1975
White-breasted NuthatchSittidae102025+29%1974
Ruddy DuckAnatidae102015+400%1988
Nuttall's WoodpeckerPicidae92025+29%1975
Spotted TowheePasserellidae92025-23%1973
Caspian TernLaridae81992n/an/a
Lawrence's GoldfinchFringillidae72025-34%1974
Northern Rough-winged SwallowHirundinidae71999+25%1973
BushtitAegithalidae72025-5%1973
Red-breasted NuthatchSittidae71975n/an/a
Vaux's SwiftApodidae71977n/an/a
MallardAnatidae62024-43%1974
Great Horned OwlStrigidae62025-38%1973
American CrowCorvidae62023-78%1973
WrentitSylviidae62025-43%1973
Northern PintailAnatidae61974n/an/a
American Barn OwlTytonidae52025+75%2019

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.