BirdAnalyst
BBS Route · California · BCR 15

Johnsville Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 96 species recorded across 36 survey years, still active.

96Species 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 →
1975–2024Span
6Observers

Bird Species Found on California Johnsville

Top 40 of 96 species by most recent count. Each links to its species trend.

Species recorded on the Johnsville 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
Hermit WarblerParulidae602024+965%1977
Western TanagerCardinalidae572024+349%1977
Nashville WarblerParulidae382024+381%1978
Fox SparrowPasserellidae292024-5%1977
Western Wood-PeweeTyrannidae282024+100%1977
Spotted TowheePasserellidae262024+281%1977
Mountain ChickadeeParidae262024-12%1977
Steller's JayCorvidae222024-29%1977
Red-breasted NuthatchSittidae202024+256%1977
Warbling VireoVireonidae132024+216%1977
Yellow WarblerParulidae132024+460%1977
Dusky FlycatcherTyrannidae122024+63%1978
Green-tailed TowheePasserellidae112024+278%1979
Olive-sided FlycatcherTyrannidae92024-27%1977
Hermit ThrushTurdidae82024+50%1977
American RobinTurdidae82024-64%1977
Ruby-crowned KingletRegulidae62019+100%2018
Brewer's BlackbirdIcteridae52019+27%1977
Chipping SparrowPasserellidae52024+180%1977
Song SparrowPasserellidae52024+67%1977
Tree SwallowHirundinidae52023+520%1979
Cassin's VireoVireonidae52024+100%1977
Pileated WoodpeckerPicidae42024+150%1980
Pine SiskinFringillidae42024+67%2010
BushtitAegithalidae42015n/an/a
Purple FinchFringillidae32024+0%1978
Black-headed GrosbeakCardinalidae32024+333%1978
Brown CreeperCerthiidae32024-48%1977
Northern House WrenTroglodytidae32024-13%1979
Cassin's FinchFringillidae32023+17%1981
Mountain BluebirdTurdidae32014+33%2009
European StarlingSturnidae32012n/an/a
White-crowned SparrowPasserellidae32019+50%2018
Mountain QuailOdontophoridae22024-70%1978
Red-breasted SapsuckerPicidae22024-22%1978
MacGillivray's WarblerParulidae22024+39%1977
Wilson's WarblerParulidae22024-75%1977
Golden-crowned KingletRegulidae22024+120%1977
Wilson's SnipeScolopacidae21985+0%1977
Evening GrosbeakFringillidae22019-69%2008

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