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BBS Route · California · BCR 32

Parkfield Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 88 species recorded across 30 survey years, still active.

88Species 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 →
30Years 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
6Observers

Bird Species Found on California Parkfield

Top 40 of 88 species by most recent count. Each links to its species trend.

Species recorded on the Parkfield 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
European StarlingSturnidae2412024-25%1971
House FinchFringillidae1872024+497%1971
Brewer's BlackbirdIcteridae1212024-46%1971
Mourning DoveColumbidae932024-7%1971
Cliff SwallowHirundinidae542024-70%1971
Acorn WoodpeckerPicidae492024+27%1971
California QuailOdontophoridae432024+120%1971
Northern MockingbirdMimidae422024+967%1971
Rock PigeonColumbidae342024+350%2009
Common RavenCorvidae29202419×1976
Eurasian Collared-DoveColumbidae292024+113%2015
Western KingbirdTyrannidae262024+10%1971
Red-tailed HawkAccipitridae242024+196%1971
California Scrub-JayCorvidae222024+10%1971
Turkey VultureCathartidae162024+233%1974
Red-winged BlackbirdIcteridae142024-52%1971
Western MeadowlarkIcteridae142024-94%1971
California TowheePasserellidae142024+285%1972
American CrowCorvidae142019+686%2007
House SparrowPasseridae132024+27%1971
Oak TitmouseParidae82024+36%1971
Band-tailed PigeonColumbidae82013+113%2007
Bullock's OrioleIcteridae62024-62%1971
Lesser GoldfinchFringillidae62024+15%1973
Hooded OrioleIcteridae62019+500%2017
Horned LarkAlaudidae42012-90%1971
Brown-headed CowbirdIcteridae42009+100%1972
Lark SparrowPasserellidae42024-37%1971
Violet-green SwallowHirundinidae42024-84%1971
Western BluebirdTurdidae42024-80%1971
Western Wood-PeweeTyrannidae41977+300%1976
Olive-sided FlycatcherTyrannidae41977n/an/a
Chestnut-backed ChickadeeParidae42012n/an/a
American KestrelFalconidae32024-76%1971
Yellow-billed MagpieCorvidae32024-93%1971
Lawrence's GoldfinchFringillidae31994+50%1968
White-breasted NuthatchSittidae32019-67%1972
Spotted TowheePasserellidae32023+100%1973
White-throated SwiftApodidae32019+200%1994
American RobinTurdidae32024-38%2008

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