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Species · Oregon · BBS 2026 Release · 1966–2025

Red-breasted Nuthatch Population Trend in Oregon

All statesForest birds

Red-breasted Nuthatch in Oregon has edged down: down 17% on the route-weighted index since 1970.

-17%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 →
110Routes 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 Red-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 Red-breasted Nuthatch in Oregon. See the full index history below.

Red-breasted Nuthatch Population Forecast in Oregon

If the recent trend holds, Red-breasted Nuthatch in Oregon is projected to rise about 18% by 2030 — from 6.3 in 2025 to a central estimate of 7.4 (95% range 3.8–11). A 5-year backtest shows a typical error of ±45.8%, 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 →
7.4Projected 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 →
3.8–1195% 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 →
±45.8%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, Red-breasted Nuthatch in Oregon is projected to rise about 18% by 2030 — from 6.3 in 2025 to a central estimate of 7.4 (95% range 3.8–11). A 5-year backtest shows a typical error of ±45.8%, 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 →
20267.23.611
20277.33.611
20287.33.711
20297.43.711
20307.43.811

Red-breasted Nuthatch Survey Routes in Oregon

Routes recording Red-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 →
Wallowa4420252025
Ruch3520251992
Shellrock3320241968
Howard Mdws.3020251992
Donnelly2920061994
Ochoco2820251993
Cinderella2720251993
Lobster Creek2620252025
Myrtle Grove2620231992
Ochoco2419821972
Black Mtn.2420041993
Clearwater2320251991
Davis Lake2320252000
Wizard Falls2220251998
Summit Pr2020251984
Hash Rock1920251983
Dell Spring1719991968
Barnhouse1720251998
Barnes Val1619871971
Tualatin1520251973
Troy1520251992
Monument1520251993
Lakeview1520251996
Badger Creek1420251992
Hells Canyon1420251992

Red-breasted Nuthatch Population Trend in Other States

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