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

White-eyed Vireo Population Trend in West Virginia

All statesForest birds

White-eyed Vireo in West Virginia has fallen sharply: down 52% on the route-weighted index since 1968.

-52%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 →
61Routes 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 White-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 →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

White-eyed Vireo has fallen sharply in West Virginia: down 52% on the route-weighted index since 1968.

White-eyed Vireo Population Forecast in West Virginia

If the recent trend holds, White-eyed Vireo in West Virginia is projected to fall about 39% by 2030 — from 2.7 in 2025 to a central estimate of 1.6 (95% range 0.13–3.1). A 5-year backtest shows a typical error of ±27.5%, 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 →
1.6Projected 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 →
0.13–3.195% 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 →
±27.5%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, White-eyed Vireo in West Virginia is projected to fall about 39% by 2030 — from 2.7 in 2025 to a central estimate of 1.6 (95% range 0.13–3.1). A 5-year backtest shows a typical error of ±27.5%, with 100% 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 →
20261.80.313.3
20271.80.273.3
20281.70.223.2
20291.70.183.2
20301.60.133.1

White-eyed Vireo Survey Routes in West Virginia

Routes recording White-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 →
Pt Pleasant2120251973
Paradise1620251966
Hubbardstown1320251966
Nicut1120251986
Henderson1120232002
Breeden920241986
Mcdonald820231987
Spencer720241986
Rockport720251966
Stollings620191986
Clendenin620251979
Fayetteville619961980
Bebee620251972
Clear Creek520241988
Yawkey520241966
Slate520251980
Josephs Mill520241993
Smoot420251980
Arlee419791966
Sutton420251976
Berryburg419961975
Olcott320241966
Washburn320251974
Smithfield320251993
Shanghai320041999

White-eyed Vireo Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganmississippimissourinebraskanew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvirginiawisconsin

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