BirdAnalyst
BBS Route · California · BCR 32

Harbor Lake Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 84 species recorded across 19 survey years, no longer active.

84Species 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 →
19Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1973–1991Span
2Observers

Bird Species Found on California Harbor Lake

Top 40 of 84 species by most recent count. Each links to its species trend.

Species recorded on the Harbor Lake 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
Northern MockingbirdMimidae1241991-20%1975
Mourning DoveColumbidae1041991-56%1975
House FinchFringillidae901991-70%1975
European StarlingSturnidae591991-78%1975
House SparrowPasseridae561991-78%1975
American CrowCorvidae45199114×1978
Rock PigeonColumbidae441991-57%1975
California TowheePasserellidae441991-55%1975
MallardAnatidae271991+127%1980
California Scrub-JayCorvidae251991-39%1975
American RobinTurdidae201991+55%1976
Nanday ParakeetPsittacidae181987n/an/a
Spotted DoveColumbidae161991-71%1975
Indian PeafowlPhasianidae131990-46%1986
Cliff SwallowHirundinidae111991-61%1975
Song SparrowPasserellidae91991-77%1975
Spotted TowheePasserellidae91991-71%1975
Western GullLaridae91991-74%1977
Bullock's OrioleIcteridae81991-65%1975
Common RavenCorvidae61991+217%1976
Lazuli BuntingCardinalidae51975+150%1973
BushtitAegithalidae51991-76%1975
Tricolored BlackbirdIcteridae51978+150%1974
Black PhoebeTyrannidae51991+43%1985
Canada GooseAnatidae51991n/an/a
Black-crowned Night HeronArdeidae41991-38%1975
Lesser GoldfinchFringillidae41988-72%1975
Brandt's CormorantPhalacrocoracidae41980-20%1978
American GoldfinchFringillidae41984+67%1980
American CootRallidae31991-88%1975
Costa's HummingbirdTrochilidae31974+200%1973
Anna's HummingbirdTrochilidae31990-86%1975
Brewer's BlackbirdIcteridae31991-67%1975
Pied-billed GrebePodicipedidae31990-13%1979
American KestrelFalconidae21990+0%1975
Brown-headed CowbirdIcteridae21990-91%1975
Western MeadowlarkIcteridae21981-89%1975
Western TanagerCardinalidae21973n/an/a
Warbling VireoVireonidae21973n/an/a
Orange-crowned WarblerParulidae21991-74%1975

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