BirdAnalyst
BBS Route · California · BCR 5

Dirigio Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 70 species recorded across 12 survey years, still active.

70Species 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 →
12Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1999–2014Span
2Observers

Bird Species Found on California Dirigio

Top 40 of 70 species by most recent count. Each links to its species trend.

Species recorded on the Dirigio 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
Steller's JayCorvidae632014+113%2001
Red-breasted NuthatchSittidae302014+79%2001
Western TanagerCardinalidae222014-6%2001
Hermit ThrushTurdidae182014+262%2001
Dusky FlycatcherTyrannidae172014+182%2001
American RobinTurdidae142014+85%2001
Band-tailed PigeonColumbidae122014+171%2001
Fox SparrowPasserellidae102014-8%2001
Red CrossbillFringillidae102006+43%2002
Warbling VireoVireonidae92014+0%2001
Mountain ChickadeeParidae72014-64%2001
Spotted TowheePasserellidae62014-59%2001
Lazuli BuntingCardinalidae62012+160%2002
Olive-sided FlycatcherTyrannidae52014+47%2001
Common RavenCorvidae52014+200%2001
Western Wood-PeweeTyrannidae42014-63%2001
Brown CreeperCerthiidae42014+44%2002
Green-tailed TowheePasserellidae42012-11%2003
Hairy WoodpeckerPicidae32014+167%2001
White-headed WoodpeckerPicidae32014+200%2004
Calliope HummingbirdTrochilidae32007+33%2001
Cassin's FinchFringillidae32007+80%2001
Yellow WarblerParulidae32012-28%2001
Lincoln's SparrowPasserellidae22012+0%2001
Black-headed GrosbeakCardinalidae22014-78%2001
Nashville WarblerParulidae22014-72%2001
Black-throated Gray WarblerParulidae22014-46%2001
Hermit WarblerParulidae22014-58%2001
Townsend's SolitaireTurdidae22014+83%2001
Evening GrosbeakFringillidae22004+100%2000
Hutton's VireoVireonidae22014+0%2002
White-breasted NuthatchSittidae22007-40%2003
Mountain QuailOdontophoridae22007-50%2003
Belted KingfisherAlcedinidae22005n/an/a
California TowheePasserellidae22014n/an/a
Spotted SandpiperScolopacidae12005+0%2000
Red-tailed HawkAccipitridae12012-33%2003
Pileated WoodpeckerPicidae12014+50%2004
Anna's HummingbirdTrochilidae12012+0%2002
Tree SwallowHirundinidae12006-29%2001

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