BirdAnalyst
BBS Route · California · BCR 32

Parkfield Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 89 species recorded across 31 survey years, still active.

89Species 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 →
31Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2025Span
6Observers

Bird Species Found on California Parkfield

Top 40 of 89 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
Brewer's BlackbirdIcteridae2072025-18%1971
House FinchFringillidae2002025+357%1971
European StarlingSturnidae1262025-16%1971
Mourning DoveColumbidae922025-12%1971
Acorn WoodpeckerPicidae582025+10%1971
Common RavenCorvidae52202523×1976
Cliff SwallowHirundinidae522025-66%1971
Western KingbirdTyrannidae462025+38%1971
Northern MockingbirdMimidae412025+958%1971
California Scrub-JayCorvidae292025+30%1971
Eurasian Collared-DoveColumbidae262025+108%2015
Red-tailed HawkAccipitridae222025+217%1971
House SparrowPasseridae192025-41%1971
California QuailOdontophoridae182025+100%1971
Turkey VultureCathartidae162025+258%1974
Bullock's OrioleIcteridae142025-55%1971
California TowheePasserellidae132025+262%1972
Lark SparrowPasserellidae102025-37%1971
Violet-green SwallowHirundinidae102025-70%1971
Western MeadowlarkIcteridae92025-94%1971
Band-tailed PigeonColumbidae82013+113%2007
Western BluebirdTurdidae72025-74%1971
BushtitAegithalidae72025+125%1995
American KestrelFalconidae52025-74%1971
American CrowCorvidae52025+400%2007
Horned LarkAlaudidae42012-90%1971
Brown-headed CowbirdIcteridae42009+100%1972
Loggerhead ShrikeLaniidae42025-77%1971
Oak TitmouseParidae42025-10%1971
Western Wood-PeweeTyrannidae41977+300%1976
Olive-sided FlycatcherTyrannidae41977n/an/a
Chestnut-backed ChickadeeParidae42012n/an/a
KilldeerCharadriidae32025-82%1971
Yellow-billed MagpieCorvidae32025-93%1971
Lawrence's GoldfinchFringillidae31994+50%1968
White-breasted NuthatchSittidae32019-67%1972
Lesser GoldfinchFringillidae22025-31%1973
Purple MartinHirundinidae21968n/an/a
California ThrasherMimidae22025+133%1975
Bewick's WrenTroglodytidae22022-43%1971

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