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

Brown Creeper Population Trend in West Virginia

All statesForest birds

Brown Creeper in West Virginia has surged: up 988% on the route-weighted index since 1980.

+988%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 →
16Routes 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 →
32YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Brown Creeper 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 Brown Creeper in West Virginia. See the full index history below.

Brown Creeper Population Forecast in West Virginia

If the recent trend holds, Brown Creeper in West Virginia is projected to fall about 32% by 2030 — from 0.47 in 2025 to a central estimate of 0.32 (95% range 0.10–0.53). A 5-year backtest shows a typical error of ±28.7%, with 100% of held-out values landing inside the 95% band.

-32%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 →
0.32Projected 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 →
0.10–0.5395% 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 →
±28.7%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, Brown Creeper in West Virginia is projected to fall about 32% by 2030 — from 0.47 in 2025 to a central estimate of 0.32 (95% range 0.10–0.53). A 5-year backtest shows a typical error of ±28.7%, with 100% of held-out values landing inside the 95% band.19742030
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 →
20260.290.070.51
20270.300.080.52
20280.300.090.52
20290.310.090.53
20300.320.100.53

Brown Creeper Survey Routes in West Virginia

Routes recording Brown Creeper 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 →
Glady620252002
Green Bank620251999
Bemis420252001
Glade Run 2420252006
Denmar320241980
Glade Run219991999
Ruthbelle220242007
Dailey120191974
Pedro120112011
Bowden120231995
Wymer120091995
Meadowville120231997
Bismark120212021
Canaan120222016
Richwood120082008
Sugar Grove120192019

Brown Creeper Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutidahoillinoisindianaiowamainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-dakotatennesseetexasutahvermontvirginiawashingtonwisconsinwyoming

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