BirdAnalyst
BBS Route · California · BCR 15

Tuolumne Grove Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 118 species recorded across 46 survey years, still active.

118Species 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 →
46Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–2025Span
5Observers

Bird Species Found on California Tuolumne Grove

Top 40 of 118 species by most recent count. Each links to its species trend.

Species recorded on the Tuolumne Grove 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 TowheePasserellidae402025+19%1974
Mountain QuailOdontophoridae332025+77%1974
Western TanagerCardinalidae272025-14%1974
Purple FinchFringillidae212025+64%1974
White-throated SwiftApodidae192025+14%1974
Fox SparrowPasserellidae192025+92%1980
Lazuli BuntingCardinalidae172025+300%1978
Acorn WoodpeckerPicidae162025+126%1974
MacGillivray's WarblerParulidae162025-14%1974
American RobinTurdidae162025-67%1974
Western Wood-PeweeTyrannidae152025-70%1974
Nashville WarblerParulidae152025-76%1974
Red-breasted NuthatchSittidae152025-17%1974
California GullLaridae151979n/an/a
Warbling VireoVireonidae132025-30%1974
Chipping SparrowPasserellidae112025-7%1974
Black-headed GrosbeakCardinalidae112025-75%1974
Lesser GoldfinchFringillidae92025-12%1974
BushtitAegithalidae92015-6%1976
Common RavenCorvidae92025+178%1982
Cassin's VireoVireonidae82025-53%1974
Mountain ChickadeeParidae82025-78%1974
Song SparrowPasserellidae82025+633%1977
Olive-sided FlycatcherTyrannidae72025-73%1974
Red-winged BlackbirdIcteridae72025+31%1974
Pine SiskinFringillidae72011+63%1975
Mourning DoveColumbidae62025+25%1974
Cliff SwallowHirundinidae61979+100%1973
Golden-crowned KingletRegulidae62025-79%1974
Dusky FlycatcherTyrannidae52025+23%1974
Yellow WarblerParulidae52025+57%1975
Black-throated Gray WarblerParulidae52025-80%1974
Pileated WoodpeckerPicidae52023+50%1975
Red CrossbillFringillidae52025-88%1981
California Scrub-JayCorvidae42025+200%1974
Brown CreeperCerthiidae42025-50%1974
Western BluebirdTurdidae42024+150%1977
Lawrence's GoldfinchFringillidae42025-44%1997
Steller's JayCorvidae32025-40%1974
Barn SwallowHirundinidae31984-46%1974

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.