BirdAnalyst
BBS Route · California · BCR 5

Holmes Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 114 species recorded across 49 survey years, still active.

114Species 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 →
49Years 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
7Observers

Bird Species Found on California Holmes

Top 40 of 114 species by most recent count. Each links to its species trend.

Species recorded on the Holmes 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
Steller's JayCorvidae282024-7%1970
Chestnut-backed ChickadeeParidae282024-51%1970
Swainson's ThrushTurdidae252024-41%1970
Hermit ThrushTurdidae252024-14%1971
Black SwiftApodidae251999n/an/a
European StarlingSturnidae212021+410%1975
Warbling VireoVireonidae202024-61%1970
Brown CreeperCerthiidae182024+250%1972
American RobinTurdidae162024-31%1970
Common RavenCorvidae152024-26%1970
Golden-crowned KingletRegulidae152024+75%1970
Cliff SwallowHirundinidae142024-42%1971
WrentitSylviidae142024-5%1970
Western TanagerCardinalidae122024-22%1970
Varied ThrushTurdidae122024+0%1970
Song SparrowPasserellidae112024-59%1970
Orange-crowned WarblerParulidae112024-78%1970
Wilson's WarblerParulidae112024-88%1970
Spotted TowheePasserellidae102024-44%1970
Pacific WrenTroglodytidae102024+28%1970
Band-tailed PigeonColumbidae102022+89%1974
Black-headed GrosbeakCardinalidae92024-53%1970
Lazuli BuntingCardinalidae92024+19%1970
Tree SwallowHirundinidae82022-33%1971
Purple MartinHirundinidae82013-38%1973
Eurasian Collared-DoveColumbidae82024-29%2016
Purple FinchFringillidae72024-35%1970
Hermit WarblerParulidae72024-53%1970
Cassin's VireoVireonidae72024-11%1976
Violet-green SwallowHirundinidae62024+271%1973
Red-breasted NuthatchSittidae62024+89%1972
Rock PigeonColumbidae52012n/an/a
Pine SiskinFringillidae42007-38%1972
Black-throated Gray WarblerParulidae42024-46%1970
Red-winged BlackbirdIcteridae41971+100%1969
American GoldfinchFringillidae42024-42%1972
Brewer's BlackbirdIcteridae42023-20%1973
California QuailOdontophoridae32024-74%1970
Mourning DoveColumbidae32024+71%1970
California Scrub-JayCorvidae32024-69%1970

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