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BBS Route · California · BCR 33

Lenwood Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 55 species recorded across 16 survey years, no longer active.

55Species 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 →
16Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1973–2012Span
4Observers

Bird Species Found on California Lenwood

Top 40 of 55 species by most recent count. Each links to its species trend.

Species recorded on the Lenwood 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
Horned LarkAlaudidae802012-33%1977
House SparrowPasseridae662012-40%1977
House FinchFringillidae172012+43%1978
Black-throated SparrowPasserellidae161985+480%1980
Common RavenCorvidae132012+406%1979
Rock PigeonColumbidae112012+118%1979
European StarlingSturnidae82012+27%1977
Say's PhoebeTyrannidae72012+67%1982
Cassin's KingbirdTyrannidae71980n/an/a
Gambel's QuailOdontophoridae62012+133%1979
Mourning DoveColumbidae52012-57%1977
Western KingbirdTyrannidae52012-35%1977
Northern MockingbirdMimidae52012+250%1982
Yellow-headed BlackbirdIcteridae41979+300%1973
American KestrelFalconidae41995+50%1979
California QuailOdontophoridae41995-88%1992
Western MeadowlarkIcteridae32012+43%1979
Red-winged BlackbirdIcteridae21985-54%1978
LeConte's ThrasherMimidae21993+0%1977
American CootRallidae21978+100%1975
Spotted SandpiperScolopacidae21975n/an/a
Northern HarrierAccipitridae21995+14%1980
Red-tailed HawkAccipitridae22012+100%1979
Bullock's OrioleIcteridae21993+50%1981
Scott's OrioleIcteridae21977n/an/a
Lesser GoldfinchFringillidae21977n/an/a
Burrowing OwlStrigidae21984-71%1980
PhainopeplaPtiliogonatidae21984-33%1981
Black PhoebeTyrannidae11993+0%1973
Brewer's BlackbirdIcteridae12012-27%1979
Greater RoadrunnerCuculidae11978+0%1975
KilldeerCharadriidae11995+33%1980
Bell's SparrowPasserellidae12012+13%1979
Warbling VireoVireonidae11977n/an/a
Cassin's VireoVireonidae11977n/an/a
Turkey VultureCathartidae12012+0%1978
Costa's HummingbirdTrochilidae11978n/an/a
Barn SwallowHirundinidae11994+0%1978
Northern Rough-winged SwallowHirundinidae11985-50%1978
Loggerhead ShrikeLaniidae12012+100%1981

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