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BBS Route · California · BCR 32

Ventucopa Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 83 species recorded across 27 survey years, still active.

83Species 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 →
27Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–2002Span
4Observers

Bird Species Found on California Ventucopa

Top 40 of 83 species by most recent count. Each links to its species trend.

Species recorded on the Ventucopa 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
Western MeadowlarkIcteridae752002+61%1976
European StarlingSturnidae662002-40%1976
Common RavenCorvidae592002+147%1976
Horned LarkAlaudidae582002-74%1976
House FinchFringillidae542002-13%1976
Tricolored BlackbirdIcteridae452002-54%1984
Lark SparrowPasserellidae412002+925%1977
Mourning DoveColumbidae392002+15%1976
Brewer's BlackbirdIcteridae342002+109%1976
Rock PigeonColumbidae331997+115%1982
Red-winged BlackbirdIcteridae272002+900%1977
Western KingbirdTyrannidae262002+164%1976
Spotted TowheePasserellidae202002+425%1982
Bullock's OrioleIcteridae152002+375%1976
California TowheePasserellidae152002+71%1977
Brown-headed CowbirdIcteridae141998+280%1985
Red-tailed HawkAccipitridae122002+142%1977
PhainopeplaPtiliogonatidae121998+360%1995
Loggerhead ShrikeLaniidae112002+236%1976
House SparrowPasseridae82001-2%1976
Brewer's SparrowPasserellidae82001+167%1995
American CootRallidae71997+120%1994
Mountain QuailOdontophoridae61998+75%1983
Northern Rough-winged SwallowHirundinidae52002+71%1983
BushtitAegithalidae51992n/an/a
Northern MockingbirdMimidae42002+200%1976
Bewick's WrenTroglodytidae42002+88%1981
Burrowing OwlStrigidae31972n/an/a
Say's PhoebeTyrannidae32001+17%1984
California Scrub-JayCorvidae32002+25%1976
Bell's SparrowPasserellidae32001+17%1982
California ThrasherMimidae32002+425%1976
Northern HarrierAccipitridae31999+25%1983
Costa's HummingbirdTrochilidae31995+200%1981
Black-headed GrosbeakCardinalidae31998+67%1985
MallardAnatidae31993+200%1986
Pied-billed GrebePodicipedidae31997+200%1989
Grasshopper SparrowPasserellidae31999-17%1995
Black-throated SparrowPasserellidae31995+50%1994
KilldeerCharadriidae21999+125%1980

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