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BBS Route · California · BCR 32

Gold Hill Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 111 species recorded across 52 survey years, still active.

111Species 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 →
52Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1971–2025Span
4Observers

Bird Species Found on California Gold Hill

Top 40 of 111 species by most recent count. Each links to its species trend.

Species recorded on the Gold Hill 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
Tricolored BlackbirdIcteridae651990n/an/a
House FinchFringillidae622025+206%1974
Acorn WoodpeckerPicidae382025+12%1974
Red-winged BlackbirdIcteridae362025+353%1974
Cedar WaxwingBombycillidae302010-40%2001
Canada GooseAnatidae272025+592%1993
Ash-throated FlycatcherTyrannidae252025+95%1979
Band-tailed PigeonColumbidae252025+314%1993
European StarlingSturnidae242025-22%1974
Cliff SwallowHirundinidae222025+250%1974
MallardAnatidae222025+48%1975
Western BluebirdTurdidae212025+164%1974
Lesser GoldfinchFringillidae212025-32%1979
Mourning DoveColumbidae202025-20%1974
Oak TitmouseParidae202025+417%1975
House SparrowPasseridae192025+53%1974
Violet-green SwallowHirundinidae162025+38%1981
Western KingbirdTyrannidae142025-27%1974
California TowheePasserellidae142025+131%1976
White-breasted NuthatchSittidae142025+33%1979
Wild TurkeyPhasianidae14202511×1988
Bullock's OrioleIcteridae132025+13%1975
California QuailOdontophoridae122025-23%1974
California Scrub-JayCorvidae122025+77%1974
Spotted TowheePasserellidae122025-17%1978
Black-headed GrosbeakCardinalidae122025+39%1979
Eurasian Collared-DoveColumbidae122025+767%2017
Brown-headed CowbirdIcteridae102025-7%1979
BushtitAegithalidae102024-73%1980
Turkey VultureCathartidae92025+486%1974
Orange-crowned WarblerParulidae82025-4%1979
Bewick's WrenTroglodytidae82025-41%1980
Northern MockingbirdMimidae62025+333%1979
American RobinTurdidae52025-13%1974
KilldeerCharadriidae42025-33%1974
Lark SparrowPasserellidae42025-8%1976
Wood DuckAnatidae42025+175%1984
Warbling VireoVireonidae42025+40%1985
White-throated SwiftApodidae42024+133%2009
Red-tailed HawkAccipitridae32025+167%1975

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