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BBS Route · California · BCR 32

Auburn Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 80 species recorded across 11 survey years, no longer active.

80Species 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 →
11Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1969–1980Span
3Observers

Bird Species Found on California Auburn

Top 40 of 80 species by most recent count. Each links to its species trend.

Species recorded on the Auburn 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
Cliff SwallowHirundinidae1591980+1%1972
House FinchFringillidae801980-7%1972
California Scrub-JayCorvidae731980+68%1972
European StarlingSturnidae681980+80%1972
House SparrowPasseridae581980-3%1972
Oak TitmouseParidae581980+267%1972
Northern MockingbirdMimidae501980+171%1972
Tree SwallowHirundinidae411980+56%1972
Rock PigeonColumbidae401979+925%1972
Lesser GoldfinchFringillidae351980+43%1972
BushtitAegithalidae351980+24%1972
Bewick's WrenTroglodytidae331980+878%1972
Mourning DoveColumbidae281980+25%1972
California QuailOdontophoridae271980+139%1973
Brewer's BlackbirdIcteridae251980-54%1972
Western MeadowlarkIcteridae211980+45%1972
American RobinTurdidae191980+79%1972
Ash-throated FlycatcherTyrannidae171980+30%1972
Turkey VultureCathartidae141980+89%1972
Black PhoebeTyrannidae131980+133%1973
Ring-necked PheasantPhasianidae121980+257%1973
Barn SwallowHirundinidae121980-50%1972
Bullock's OrioleIcteridae111980+66%1972
Violet-green SwallowHirundinidae111980+33%1973
Western KingbirdTyrannidae101980+17%1972
Red-winged BlackbirdIcteridae101980+417%1972
KilldeerCharadriidae91980+94%1972
Nuttall's WoodpeckerPicidae91980-14%1972
Acorn WoodpeckerPicidae81980-58%1972
American GoldfinchFringillidae81980+47%1972
Spotted TowheePasserellidae81980+42%1972
Band-tailed PigeonColumbidae81973n/an/a
Western BluebirdTurdidae71980-17%1972
Brown-headed CowbirdIcteridae61980+271%1972
Orange-crowned WarblerParulidae61979+9%1976
Great Blue HeronArdeidae51979+67%1975
White-breasted NuthatchSittidae51980+243%1973
Northern House WrenTroglodytidae51980+138%1976
Cedar WaxwingBombycillidae51977n/an/a
Black-headed GrosbeakCardinalidae41980+67%1972

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