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BBS Route · California · BCR 5

Horse Creek Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 108 species recorded across 49 survey years, still active.

108Species 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 →
1970–2019Span
3Observers

Bird Species Found on California Horse Creek

Top 40 of 108 species by most recent count. Each links to its species trend.

Species recorded on the Horse Creek 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
Tree SwallowHirundinidae702019+26%1972
Black-headed GrosbeakCardinalidae672019+192%1972
Yellow WarblerParulidae632019+42%1972
Western TanagerCardinalidae582019+227%1972
Song SparrowPasserellidae542019+46%1972
Black-throated Gray WarblerParulidae54201919×1972
Western Wood-PeweeTyrannidae532019+76%1972
Yellow-breasted ChatIcteriidae482019+169%1972
Brewer's BlackbirdIcteridae452019+111%1972
Cassin's VireoVireonidae442019+495%1972
Cliff SwallowHirundinidae392019+109%1973
Nashville WarblerParulidae312019+275%1973
American RobinTurdidae242019+35%1972
California Scrub-JayCorvidae23201913×1982
Northern Rough-winged SwallowHirundinidae222019+281%1972
Brown-headed CowbirdIcteridae202019+63%1973
Steller's JayCorvidae192019+650%1972
Eurasian Collared-DoveColumbidae182019+7%2016
European StarlingSturnidae162019+236%1972
Bullock's OrioleIcteridae162019+159%1972
California QuailOdontophoridae162019+389%1979
Common MerganserAnatidae152019-25%1972
American CrowCorvidae142019-31%1972
Lazuli BuntingCardinalidae122019+6%1972
Northern House WrenTroglodytidae122019+143%1972
Warbling VireoVireonidae122019+280%1973
Willow FlycatcherTyrannidae122019+217%1976
Spotted TowheePasserellidae112019+78%1972
MacGillivray's WarblerParulidae11201913×1976
Lesser GoldfinchFringillidae82019+25%1972
Spotted SandpiperScolopacidae62019-33%1972
Mourning DoveColumbidae62019+157%1972
OspreyPandionidae62019+37%1972
Violet-green SwallowHirundinidae62019-53%1972
BushtitAegithalidae62019+171%1973
Cedar WaxwingBombycillidae62015-15%1982
Rock PigeonColumbidae61981+500%1979
Red CrossbillFringillidae61992+200%1989
Great Blue HeronArdeidae52019-67%1972
Red-winged BlackbirdIcteridae52019+400%1972

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