BirdAnalyst
BBS Route · North Carolina · BCR 27

California 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 93 species recorded across 10 survey years, still active.

93Species 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 →
10Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2014–2024Span
2Observers

Bird Species Found on North Carolina California 2

Top 40 of 93 species by most recent count. Each links to its species trend.

Species recorded on the California 2 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
American CrowCorvidae572024+12%2016
Northern CardinalCardinalidae552024+60%2016
European StarlingSturnidae472024+10%2016
Carolina WrenTroglodytidae422024+47%2016
Northern MockingbirdMimidae412024+19%2016
Mourning DoveColumbidae402024-5%2016
Tufted TitmouseParidae352024-8%2016
Turkey VultureCathartidae292024-17%2016
Chipping SparrowPasserellidae272024+14%2016
Indigo BuntingCardinalidae252024-14%2016
White-eyed VireoVireonidae232024+50%2016
Blue-gray GnatcatcherPolioptilidae232024+42%2016
OvenbirdParulidae222024-22%2016
Barn SwallowHirundinidae202024+61%2016
Pine WarblerParulidae202024+7%2016
Red-eyed VireoVireonidae192024-47%2016
Red-bellied WoodpeckerPicidae182024+69%2016
Purple MartinHirundinidae182024+2%2016
Common YellowthroatParulidae182024+14%2016
Eastern BluebirdTurdidae182024+5%2016
Eastern TowheePasserellidae152024-25%2016
Great Crested FlycatcherTyrannidae142024-58%2016
American GoldfinchFringillidae132024-6%2016
Yellow-throated WarblerParulidae132024+35%2016
Summer TanagerCardinalidae122024-28%2016
American RobinTurdidae122024-33%2016
Chimney SwiftApodidae112024-15%2016
Blue JayCorvidae112024-26%2016
Brown-headed CowbirdIcteridae112024+3%2016
Carolina ChickadeeParidae112024+21%2016
Yellow-breasted ChatIcteriidae102024+0%2016
Brown ThrasherMimidae102024-6%2016
Brown-headed NuthatchSittidae102024+100%2016
Yellow-billed CuckooCuculidae92024-9%2016
Eastern Wood-PeweeTyrannidae92024-25%2016
Fish CrowCorvidae92024+52%2016
House FinchFringillidae92024+43%2016
Blue GrosbeakCardinalidae92024-45%2016
Northern BobwhiteOdontophoridae82024-17%2016
Acadian FlycatcherTyrannidae82024-28%2016

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