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BBS Route · California · BCR 5

Shasta Lake Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 115 species recorded across 37 survey years, still active.

115Species 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 →
37Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–2024Span
5Observers

Bird Species Found on California Shasta Lake

Top 40 of 115 species by most recent count. Each links to its species trend.

Species recorded on the Shasta 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
Spotted TowheePasserellidae432024-13%1974
Western TanagerCardinalidae262024+42%1974
Acorn WoodpeckerPicidae202024+124%1974
Western Wood-PeweeTyrannidae192012-66%1974
Lesser GoldfinchFringillidae182024-30%1974
Steller's JayCorvidae172024+104%1974
Hairy WoodpeckerPicidae172024+733%1976
Black-headed GrosbeakCardinalidae152024-20%1974
Cliff SwallowHirundinidae152024-35%1974
Black-throated Gray WarblerParulidae152024+15%1974
Cassin's VireoVireonidae122024+42%1974
Mountain QuailOdontophoridae112012+222%1974
Ash-throated FlycatcherTyrannidae112024-48%1974
Chestnut-backed ChickadeeParidae112024+186%1980
Oak TitmouseParidae102024+271%1974
Mourning DoveColumbidae92024+236%1974
American RobinTurdidae92024+106%1974
California TowheePasserellidae92012+200%1976
White-breasted NuthatchSittidae82024+48%1974
Hutton's VireoVireonidae72024+44%1974
Bewick's WrenTroglodytidae72024-54%1974
Turkey VultureCathartidae62024+225%1979
Chipping SparrowPasserellidae62007+167%1974
Nashville WarblerParulidae62007+0%1974
Orange-crowned WarblerParulidae62024-16%1974
Red CrossbillFringillidae62024+200%1983
Yellow-breasted ChatIcteriidae52024+110%1975
Red-tailed HawkAccipitridae42024+600%1974
California Scrub-JayCorvidae42024+292%1974
Bullock's OrioleIcteridae42012-53%1974
Red-breasted NuthatchSittidae42024-36%1974
BushtitAegithalidae42024+55%1975
House FinchFringillidae31974-25%1972
Common MerganserAnatidae32007+150%1975
Blue-gray GnatcatcherPolioptilidae32024+67%1990
Ruby-crowned KingletRegulidae32012+0%1981
Hermit WarblerParulidae32003+33%1995
Downy WoodpeckerPicidae22024-56%1976
Nuttall's WoodpeckerPicidae21992+20%1975
Vaux's SwiftApodidae22004+0%1985

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