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Species · Oregon · BBS 2025 Release · 1966–2024

White-breasted Nuthatch Population Trend in Oregon

All statesForest birds

White-breasted Nuthatch in Oregon has declined: down 32% on the route-weighted index since 1970.

-32%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 →
69Routes 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 →
56YearsYears 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 stay roughly flat through 2029, near 0.86 (95% range 0.19–1.5). A 5-year backtest shows a typical error of ±23.9%, with 100% of held-out values landing inside the 95% band.

-1%Change by 2029TrendPercent 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 →
0.86Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.19–1.595% 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 →
±23.9%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 stay roughly flat through 2029, near 0.86 (95% range 0.19–1.5). A 5-year backtest shows a typical error of ±23.9%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20250.850.181.5
20260.850.191.5
20270.850.191.5
20280.860.191.5
20290.860.191.5

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 →
Silver Creek1220241984
Mcminnville920141995
Sisters720241997
Emigrant Lake 2620242002
Donelly 2620222018
Salem620241993
Paisley520241973
Bly 2520242007
Chinchalo520241993
Umpqua420241968
Silvies420241994
Desolation419931993
Summit Pr320231981
Adair320231971
Dayton320231975
Elkton320241972
Secret Val320221977
Badger Creek320241992
Green320241996
Monument320231993
Paunina320241993
Albee220221968
Lapham Res.220241999
Wizard Falls220181998
Modoc Point220101978

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 2026-05-22.