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Species · Oregon · BBS 2026 Release · 1966–2025

White-breasted Nuthatch Population Trend in Oregon

All statesForest birds

White-breasted Nuthatch in Oregon has declined: down 33% on the route-weighted index since 1970.

-33%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 →
70Routes 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 White-breasted Nuthatch 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 →

No notable trend signals for White-breasted Nuthatch in Oregon. See the full index history below.

White-breasted Nuthatch Population Forecast in Oregon

If the recent trend holds, White-breasted Nuthatch in Oregon is projected to fall about 18% by 2030 — from 1.1 in 2025 to a central estimate of 0.88 (95% range 0.21–1.5). A 5-year backtest shows a typical error of ±20.8%, with 100% of held-out values landing inside the 95% band.

-18%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 →
0.88Projected 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 →
0.21–1.595% 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 →
±20.8%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, White-breasted Nuthatch in Oregon is projected to fall about 18% by 2030 — from 1.1 in 2025 to a central estimate of 0.88 (95% range 0.21–1.5). A 5-year backtest shows a typical error of ±20.8%, with 100% 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 →
20260.870.201.5
20270.870.211.5
20280.870.211.5
20290.880.211.5
20300.880.211.5

White-breasted Nuthatch Survey Routes in Oregon

Routes recording White-breasted Nuthatch 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 →
Chinchalo1320251993
Silver Creek1220251984
Sisters1120251997
Green1020251996
Tualatin920251968
Mcminnville920141995
Davis Lake620252006
Badger Creek520251992
Salem520251993
Umpqua420241968
Silvies420241994
Desolation419931993
Paunina420251993
Summit Pr320231981
Lapham Res.320251999
Paisley320251973
Emigrant Lake 2320252002
Adair320251971
Monument320231993
Selma320251995
Lakeview320251996
Albee220221968
Wizard Falls220181998
Modoc Point220101978
Dayton220251975

White-breasted Nuthatch Population Trend in Other States

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

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