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Species · Oregon · BBS 2026 Release · 1966–2025

Pygmy Nuthatch Population Trend in Oregon

All statesForest birds

Pygmy Nuthatch in Oregon has edged up: up 11% on the route-weighted index since 1970.

+11%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 →
41Routes 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 Pygmy 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 Pygmy Nuthatch in Oregon. See the full index history below.

Pygmy Nuthatch Population Forecast in Oregon

If the recent trend holds, Pygmy Nuthatch in Oregon is projected to stay roughly flat through 2030, near 0.76 (95% range 0.36–1.2). A 5-year backtest shows a typical error of ±26.2%, with 100% of held-out values landing inside the 95% band.

+6%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 →
0.76Projected 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 →
0.36–1.295% 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 →
±26.2%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, Pygmy Nuthatch in Oregon is projected to stay roughly flat through 2030, near 0.76 (95% range 0.36–1.2). A 5-year backtest shows a typical error of ±26.2%, 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 →
20260.720.331.1
20270.730.341.1
20280.740.341.1
20290.750.351.1
20300.760.361.2

Pygmy Nuthatch Survey Routes in Oregon

Routes recording Pygmy 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 Creek2020251991
Sisters1520251997
Bly 2620222007
Eagle Rock619781973
Monument620251993
Modoc Point520181970
Summit Pr420251981
Elk Lake420222004
Wallowa420252025
Badger Creek419981994
Barnhouse420252004
Donelly 2420252022
Silvies420231995
Paunina420132004
Modoc Point 2320252024
Albee320221968
Wizard Falls320251999
Paisley320221973
Troy319951995
Donnelly320041995
Flora220051987
Deschutes220251975
Ochoco219811977
Dell Spring219831972
Camp Sherman219921974

Pygmy Nuthatch Population Trend in Other States

arizonacaliforniacoloradoidahomontananebraskanew-mexicosouth-dakotautahwashingtonwyoming

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