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

Red-eyed Vireo Population Trend in West Virginia

All statesForest birds

Red-eyed Vireo in West Virginia has increased: up 47% on the route-weighted index since 1968.

+47%Since 1968TrendPercent 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 →
64Routes 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 →
59YearsYears 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-eyed Vireo 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-eyed Vireo in West Virginia. See the full index history below.

Red-eyed Vireo Population Forecast in West Virginia

If the recent trend holds, Red-eyed Vireo in West Virginia is projected to rise about 24% by 2030 — from 31 in 2025 to a central estimate of 38 (95% range 29–47). A 5-year backtest shows a typical error of ±24.1%, with 60% of held-out values landing inside the 95% band.

+24%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 →
38Projected 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 →
29–4795% 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 →
±24.1%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-eyed Vireo in West Virginia is projected to rise about 24% by 2030 — from 31 in 2025 to a central estimate of 38 (95% range 29–47). A 5-year backtest shows a typical error of ±24.1%, with 60% of held-out values landing inside the 95% band.19662030
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 →
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2030382947

Red-eyed Vireo Survey Routes in West Virginia

Routes recording Red-eyed Vireo 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 →
Shanghai6320251995
Three Forks5820251971
Stollings5520211986
Bowden5520251993
Glady5420252001
Ruthbelle5120251975
Meadowville4920251972
Bismark4820251976
Albright4719741966
Denmar4520251980
Ringgold4520252025
Breeden4420241986
Smithfield4420251993
Valley Head4320251966
Strange Crk4020251982
Green Bank4020251977
Sutton3920251976
Sleepy Creek3619901966
Bemis3620252001
Fayetteville3419961980
Meadland3420251997
Mo Of Seneca3420251969
Smoot3320251980
Ghent3320251978
Yawkey3320241966

Red-eyed Vireo Population Trend in Other States

alabamaalaskaarkansascoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawashingtonwisconsinwyoming

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