BirdAnalyst
BBS Route · Oregon · BCR 5

Scio Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 115 species recorded across 39 survey years, still active.

115Species 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 →
39Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1971–2025Span
6Observers

Bird Species Found on Oregon Scio

Top 40 of 115 species by most recent count. Each links to its species trend.

Species recorded on the Scio 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 RobinTurdidae492025-4%1975
American CrowCorvidae432025+27%1975
Swainson's ThrushTurdidae332025-29%1985
White-crowned SparrowPasserellidae252025+39%1975
European StarlingSturnidae202025+29%1975
American GoldfinchFringillidae182025-60%1975
Spotted TowheePasserellidae182025+5%1975
Western TanagerCardinalidae182025+42%1975
Western Wood-PeweeTyrannidae172025+2%1981
Violet-green SwallowHirundinidae162025+131%1975
Song SparrowPasserellidae152025-8%1975
Band-tailed PigeonColumbidae132025-35%1975
Hermit ThrushTurdidae132002+18%1972
Brewer's BlackbirdIcteridae102025-70%1975
Red-winged BlackbirdIcteridae102025+25%1981
Turkey VultureCathartidae92025+225%1975
Red CrossbillFringillidae9202522×2002
California QuailOdontophoridae82025+16%1975
Willow FlycatcherTyrannidae82025-26%1975
Black-headed GrosbeakCardinalidae82025-18%1975
Cedar WaxwingBombycillidae82025-33%1975
Purple FinchFringillidae82025-70%1985
Steller's JayCorvidae72025+143%1975
California Scrub-JayCorvidae72025+767%1975
Evening GrosbeakFringillidae72022-31%1990
Eurasian Collared-DoveColumbidae72025+31%2017
Mourning DoveColumbidae62025+50%1975
Common YellowthroatParulidae62025-31%1975
Black-capped ChickadeeParidae62025+0%1975
Barn SwallowHirundinidae52025-21%1975
Orange-crowned WarblerParulidae52025-53%1981
Red-breasted NuthatchSittidae52025-42%1987
Brown-headed CowbirdIcteridae42025-70%1975
Savannah SparrowPasserellidae42025-55%1981
Red-breasted SapsuckerPicidae42025+80%1988
Horned LarkAlaudidae42017+60%1999
MallardAnatidae42012+20%1991
House SparrowPasseridae32025-57%1975
Varied ThrushTurdidae32004+50%1988
Warbling VireoVireonidae32025+46%1985

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