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Species · West Virginia · BBS 2026 Release · 1966–2025

Red-breasted Nuthatch Population Trend in West Virginia

All statesForest birds

Red-breasted Nuthatch in West Virginia has surged: up 895% on the route-weighted index since 1980.

+895%Since 1980TrendPercent 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 →
15Routes 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 →
45YearsYears 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 West VirginiaNotable 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 West Virginia. See the full index history below.

Red-breasted Nuthatch Population Forecast in West Virginia

If the recent trend holds, Red-breasted Nuthatch in West Virginia is projected to rise about 39% by 2030 — from 0.30 in 2025 to a central estimate of 0.42 (95% range 0.21–0.63). A 5-year backtest shows a typical error of ±38.2%, with 100% of held-out values landing inside the 95% band.

+39%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 →
0.42Projected 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 →
0.21–0.6395% 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 →
±38.2%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, Red-breasted Nuthatch in West Virginia is projected to rise about 39% by 2030 — from 0.30 in 2025 to a central estimate of 0.42 (95% range 0.21–0.63). A 5-year backtest shows a typical error of ±38.2%, with 100% of held-out values landing inside the 95% band.19782030
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 →
20260.390.170.60
20270.400.180.61
20280.410.190.62
20290.410.200.63
20300.420.210.63

Red-breasted Nuthatch Survey Routes in West Virginia

Routes recording Red-breasted Nuthatch in West Virginia.
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 →
Glade Run820021988
Glade Run 2420252004
Glady320252001
Denmar320251992
Green Bank320251978
Wymer220151995
Bemis220242001
Bismark219851985
Ruthbelle220162016
Dailey120231980
Sleepy Creek119791979
Shanghai120022002
Valley Head119821982
Three Forks119841984
Richwood120132013

Red-breasted Nuthatch Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutgeorgiaidahoillinoisindianakansasmainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseeutahvermontvirginiawashingtonwisconsinwyoming

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