BirdAnalyst
BBS Route · California · BCR 9

Bartle Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 121 species recorded across 44 survey years, still active.

121Species 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 →
44Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–2021Span
8Observers

Bird Species Found on California Bartle

Top 40 of 121 species by most recent count. Each links to its species trend.

Species recorded on the Bartle 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
Western TanagerCardinalidae482021+53%1974
American White PelicanPelecanidae431984n/an/a
Sagebrush SparrowPasserellidae361977n/an/a
Spotted TowheePasserellidae302021+60%1974
Mountain ChickadeeParidae272021+56%1974
Western Wood-PeweeTyrannidae182021-9%1974
Hammond's FlycatcherTyrannidae162021+100%1980
Fox SparrowPasserellidae142021-32%1974
Cassin's VireoVireonidae142021+193%1974
Red-breasted NuthatchSittidae142021+112%1974
Warbling VireoVireonidae132021+333%1977
Hermit ThrushTurdidae112021+67%1977
White-headed WoodpeckerPicidae82021-44%1977
Olive-sided FlycatcherTyrannidae82021-67%1974
Lazuli BuntingCardinalidae82021-46%1974
Black-throated Gray WarblerParulidae82021+183%1980
Pacific WrenTroglodytidae81974n/an/a
Dusky FlycatcherTyrannidae72021+245%1980
Steller's JayCorvidae72021-31%1974
BushtitAegithalidae62021+250%1982
Mountain QuailOdontophoridae52018-82%1977
Hairy WoodpeckerPicidae52021+600%1974
Brown CreeperCerthiidae52021+114%1974
Common RavenCorvidae52021+133%1984
WrentitSylviidae52021+233%1983
Cinnamon TealAnatidae51986n/an/a
Mourning DoveColumbidae42021-36%1974
Chipping SparrowPasserellidae42021+5%1974
American RobinTurdidae42019-82%1974
Mountain BluebirdTurdidae42015-11%1974
Rock WrenTroglodytidae42021-29%1980
Bewick's WrenTroglodytidae42019-23%1980
Red CrossbillFringillidae42021+28%1983
Townsend's SolitaireTurdidae42021+8%1982
Band-tailed PigeonColumbidae42021-20%1996
Pileated WoodpeckerPicidae32021+67%1980
Purple FinchFringillidae32021+163%1980
Nashville WarblerParulidae32021+215%1980
MacGillivray's WarblerParulidae32021+367%1980
Red-tailed HawkAccipitridae32013+0%1980

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