BirdAnalyst
BBS Route · California · BCR 5

Crescent Cty Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 135 species recorded across 40 survey years, still active.

135Species 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 →
40Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–2024Span
6Observers

Bird Species Found on California Crescent Cty

Top 40 of 135 species by most recent count. Each links to its species trend.

Species recorded on the Crescent Cty 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
Swainson's ThrushTurdidae582024-47%1974
White-crowned SparrowPasserellidae542024-43%1974
Eurasian Collared-DoveColumbidae472024+30%2019
American CrowCorvidae382024+103%1974
House SparrowPasseridae382024+110%1974
Song SparrowPasserellidae372024-53%1974
Chestnut-backed ChickadeeParidae362024+15%1974
Barn SwallowHirundinidae352024-68%1974
Brewer's BlackbirdIcteridae322024-47%1974
American RobinTurdidae322024-53%1974
Red-winged BlackbirdIcteridae282024+116%1974
Black-headed GrosbeakCardinalidae192024+73%1974
Cedar WaxwingBombycillidae192024+175%1976
Steller's JayCorvidae172024+250%1975
Turkey VultureCathartidae142024+610%1975
European StarlingSturnidae132024+167%1974
Wilson's WarblerParulidae132024-44%1974
Purple FinchFringillidae122024+131%1974
American GoldfinchFringillidae112024-73%1974
Tree SwallowHirundinidae112024-61%1974
Golden-crowned KingletRegulidae112024-81%1974
Orange-crowned WarblerParulidae102024-45%1974
Cliff SwallowHirundinidae92024-32%1974
Pacific WrenTroglodytidae92024+35%1974
Violet-green SwallowHirundinidae82024-78%1974
Northern PintailAnatidae81984+700%1978
WrentitSylviidae72024+100%1974
Allen's HummingbirdTrochilidae72024+163%1976
Common RavenCorvidae62024+109%1975
Black-crowned Night HeronArdeidae62022-40%1988
Black-throated Gray WarblerParulidae62022+33%1983
California QuailOdontophoridae52024-73%1974
Brown-headed CowbirdIcteridae52024-33%1974
Ring-necked DuckAnatidae51976n/an/a
Great Blue HeronArdeidae42022+57%1974
Western Wood-PeweeTyrannidae42024+50%1974
Western GullLaridae42022-78%1975
Red-tailed HawkAccipitridae42024-13%1978
MallardAnatidae42024+71%1979
Savannah SparrowPasserellidae42024+30%1979

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