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BBS Route · California · BCR 5

Mt Shasta Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 123 species recorded across 36 survey years, still active.

123Species 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 →
36Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–2019Span
10Observers

Bird Species Found on California Mt Shasta

Top 40 of 123 species by most recent count. Each links to its species trend.

Species recorded on the Mt Shasta 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
American White PelicanPelecanidae601981n/an/a
Spotted TowheePasserellidae392019-12%1978
Mountain ChickadeeParidae262019+38%1976
American RobinTurdidae162019+93%1976
Red-breasted NuthatchSittidae142019-35%1978
Western Wood-PeweeTyrannidae132019+346%1976
Western TanagerCardinalidae132019-17%1976
Mountain BluebirdTurdidae122019+275%1981
WrentitSylviidae112019+56%1981
Hermit ThrushTurdidae102019+127%1978
Cassin's FinchFringillidae82019-33%1981
Chipping SparrowPasserellidae72019-63%1976
Grasshopper SparrowPasserellidae71976+600%1975
Song SparrowPasserellidae71976+0%1975
Willow FlycatcherTyrannidae71976n/an/a
Ring-billed GullLaridae72002-93%1978
California Scrub-JayCorvidae62019-21%1976
Fox SparrowPasserellidae62019-20%1980
Bewick's WrenTroglodytidae62019-41%1981
Green-tailed TowheePasserellidae62019+100%1981
House SparrowPasseridae62019-5%1991
Turkey VultureCathartidae52019+200%1980
Red-breasted SapsuckerPicidae52019+100%1988
Western KingbirdTyrannidae52019+150%1980
Olive-sided FlycatcherTyrannidae52019-58%1976
Cassin's VireoVireonidae52019+220%1993
California QuailOdontophoridae52015+63%1988
California GullLaridae51993+25%1980
Dusky FlycatcherTyrannidae52019-23%1990
Red CrossbillFringillidae52018-67%1991
Red-winged BlackbirdIcteridae52012+0%1997
Black-headed GrosbeakCardinalidae52019-7%2009
Mountain QuailOdontophoridae42019+0%1976
Mourning DoveColumbidae42018-63%1976
Clark's NutcrackerCorvidae42019-30%1978
Pine SiskinFringillidae42019-78%1981
Vesper SparrowPasserellidae42005-29%1980
Lazuli BuntingCardinalidae42019+33%1978
Hermit WarblerParulidae42019+8%1978
Lewis's WoodpeckerPicidae42019-56%1978

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