BirdAnalyst
BBS Route · California · BCR 5

Crescent Cty Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 135 species recorded across 41 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 →
41Years 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
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 ThrushTurdidae1142025-27%1974
American CrowCorvidae662025+139%1974
White-crowned SparrowPasserellidae612025-36%1974
Brewer's BlackbirdIcteridae592025-35%1974
Chestnut-backed ChickadeeParidae582025+45%1974
House SparrowPasseridae572025+144%1974
Eurasian Collared-DoveColumbidae572025+37%2019
American RobinTurdidae512025-47%1974
European StarlingSturnidae362025+147%1974
Barn SwallowHirundinidae362025-62%1974
Cedar WaxwingBombycillidae352025+211%1976
Song SparrowPasserellidae312025-53%1974
Band-tailed PigeonColumbidae242025-53%1974
American GoldfinchFringillidae192025-65%1974
Purple FinchFringillidae182025+169%1974
Black-headed GrosbeakCardinalidae182025+80%1974
Steller's JayCorvidae162025+250%1975
Red-winged BlackbirdIcteridae162025+106%1974
Wilson's WarblerParulidae162025-37%1974
Pacific WrenTroglodytidae152025+52%1974
Common RavenCorvidae142025+146%1975
Cliff SwallowHirundinidae142025-35%1974
Golden-crowned KingletRegulidae132025-74%1974
Brown-headed CowbirdIcteridae122025-40%1974
Allen's HummingbirdTrochilidae112025+188%1976
Violet-green SwallowHirundinidae102025-70%1974
Northern PintailAnatidae81984+700%1978
Turkey VultureCathartidae72025+460%1975
WrentitSylviidae72024+100%1974
Savannah SparrowPasserellidae72025+50%1979
Mourning DoveColumbidae62025+0%1974
Orange-crowned WarblerParulidae62025-48%1974
Black PhoebeTyrannidae62025+20%1977
MallardAnatidae62025+143%1979
Black-crowned Night HeronArdeidae62022-40%1988
Black-throated Gray WarblerParulidae62022+33%1983
Western Wood-PeweeTyrannidae52025+88%1974
Ring-necked DuckAnatidae51976n/an/a
Red-shouldered HawkAccipitridae52025+60%1982
Great Blue HeronArdeidae42022+57%1974

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