BirdAnalyst
BBS Route · California · BCR 32

Fallsvale Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 94 species recorded across 8 survey years, no longer active.

94Species 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 →
8Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1970–1981Span
2Observers

Bird Species Found on California Fallsvale

Top 40 of 94 species by most recent count. Each links to its species trend.

Species recorded on the Fallsvale 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
Band-tailed PigeonColumbidae441981+79%1972
Steller's JayCorvidae441981-38%1972
Spotted TowheePasserellidae421981+1%1972
Lesser GoldfinchFringillidae401981+77%1972
Acorn WoodpeckerPicidae361981-18%1972
Violet-green SwallowHirundinidae331981-54%1972
Western Wood-PeweeTyrannidae291981-37%1972
Mountain ChickadeeParidae281981-23%1972
Western TanagerCardinalidae241981-42%1972
Cassin's FinchFringillidae191975+54%1972
House SparrowPasseridae191975-52%1972
Northern House WrenTroglodytidae181981-65%1972
Purple FinchFringillidae131981-56%1972
House FinchFringillidae131981-63%1972
California TowheePasserellidae131981+4%1972
WrentitSylviidae131981+32%1972
Black-headed GrosbeakCardinalidae121981-54%1972
California Scrub-JayCorvidae111981-54%1972
Bullock's OrioleIcteridae111981-26%1972
Song SparrowPasserellidae111981-34%1972
Bewick's WrenTroglodytidae111981-23%1972
Ash-throated FlycatcherTyrannidae101981+3%1972
Lawrence's GoldfinchFringillidae101975+3%1972
White-throated SwiftApodidae91981-35%1972
American RobinTurdidae81981-55%1972
Western BluebirdTurdidae81981-35%1972
California ThrasherMimidae81981+700%1974
Brewer's BlackbirdIcteridae71981-48%1973
Ruby-crowned KingletRegulidae61970n/an/a
Lark SparrowPasserellidae61980n/an/a
Red-tailed HawkAccipitridae51981+0%1973
Lazuli BuntingCardinalidae51981-56%1972
Clark's NutcrackerCorvidae51972n/an/a
Olive-sided FlycatcherTyrannidae41981-76%1972
Brown-headed CowbirdIcteridae41981-61%1972
Black-chinned SparrowPasserellidae41981-87%1972
Orange-crowned WarblerParulidae41980+300%1973
Black SwiftApodidae41975n/an/a
Blue-gray GnatcatcherPolioptilidae41975n/an/a
Common RavenCorvidae41981+100%1980

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