BirdAnalyst
Species · Oregon · BBS 2026 Release · 1966–2025

Common Yellowthroat Population Trend in Oregon

All statesForest birds

Common Yellowthroat in Oregon has surged: up 535% on the route-weighted index since 1970.

+535%Since 1970TrendPercent 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 →
93Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Common Yellowthroat Trends in OregonNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Common Yellowthroat has surged in Oregon: up 535% on the route-weighted index since 1970.

Common Yellowthroat Population Forecast in Oregon

If the recent trend holds, Common Yellowthroat in Oregon is projected to rise about 73% by 2030 — from 1.9 in 2025 to a central estimate of 3.4 (95% range 2.2–4.6). A 5-year backtest shows a typical error of ±42%, with 80% of held-out values landing inside the 95% band.

+73%Change by 2030TrendPercent 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 →
3.4Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
2.2–4.695% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±42%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Common Yellowthroat in Oregon is projected to rise about 73% by 2030 — from 1.9 in 2025 to a central estimate of 3.4 (95% range 2.2–4.6). A 5-year backtest shows a typical error of ±42%, with 80% of held-out values landing inside the 95% band.19682030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20263.22.14.4
20273.32.14.5
20283.32.14.5
20293.32.24.5
20303.42.24.6

Common Yellowthroat Survey Routes in Oregon

Routes recording Common Yellowthroat in Oregon.
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 →
Fish Lake3620251972
Chinchalo1720251993
Adair1420251971
Svensen1419921990
Umpqua1220251970
Salem1220251993
Elkton1020251972
Sparta920251971
Molalla920251994
Harney Lake820241993
Scappoose820251995
Nicolai Mtn.720251993
Scio620251971
Dayton620241973
Modoc Point 2620252024
Coquille620251994
Riley Peak620162007
Bridgeport520251986
Wedderburn520251972
Twickenham520242012
Joseph420221971
Garfield420251973
Waldport419991993
Merrill420221993
Warner Vally420241993

Common Yellowthroat Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.