BirdAnalyst
Species · West Virginia · BBS 2025 Release · 1966–2024

Red-eyed Vireo Population Trend in West Virginia

All statesForest birds

Red-eyed Vireo in West Virginia has increased: up 43% on the route-weighted index since 1968.

+43%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 →
63Routes 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 →
58YearsYears 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 23% by 2029 — from 31 in 2024 to a central estimate of 38 (95% range 29–47). A 5-year backtest shows a typical error of ±21.1%, with 80% of held-out values landing inside the 95% band.

+23%Change by 2029TrendPercent 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 2029 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 →
±21.1%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 23% by 2029 — from 31 in 2024 to a central estimate of 38 (95% range 29–47). A 5-year backtest shows a typical error of ±21.1%, with 80% of held-out values landing inside the 95% band.19662029
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 →
2025372846
2026382947
2027382947
2028382947
2029382947

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 →
Meadowville6520241972
Glady5820242001
Bowden5620241993
Stollings5520211986
Three Forks5520241971
Ruthbelle5520241975
Richwood5120241980
Canaan4820241974
Albright4719741966
Bemis4720242001
Breeden4420241986
Shanghai4120221995
Ghent3720241978
Green Bank3720241977
Mo Of Seneca3620241969
Sleepy Creek3619901966
Clear Creek3520241988
Welch3520231980
Fayetteville3419961980
Clinton3420241966
Yawkey3320241966
Valley Head3220241966
Strange Crk3120241982
Denmar3020241980
Greer3020231966

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 2026-05-22.