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

Yellow-throated Warbler Population Trend in West Virginia

All statesForest birds

Yellow-throated Warbler in West Virginia has surged: up 20× on the route-weighted index since 1968.

20×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 →
53Routes 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 →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Yellow-throated Warbler 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 increasecomputed 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 →

Yellow-throated Warbler has surged in West Virginia: up 20× on the route-weighted index since 1968.

Yellow-throated Warbler Population Forecast in West Virginia

If the recent trend holds, Yellow-throated Warbler in West Virginia is projected to stay roughly flat through 2029, near 5.1 (95% range 4.0–6.3). A 5-year backtest shows a typical error of ±19.9%, with 40% of held-out values landing inside the 95% band.

-6%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 →
5.1Projected 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 →
4.0–6.395% 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 →
±19.9%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, Yellow-throated Warbler in West Virginia is projected to stay roughly flat through 2029, near 5.1 (95% range 4.0–6.3). A 5-year backtest shows a typical error of ±19.9%, with 40% 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 →
20254.83.75.9
20264.93.76.0
20275.03.86.1
20285.13.96.2
20295.14.06.3

Yellow-throated Warbler Survey Routes in West Virginia

Routes recording Yellow-throated Warbler 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 →
Stollings3320211994
Strange Crk2220241992
Hanover2120241980
Clear Creek1720241988
Josephs Mill1620241993
Welch1520221992
Sutton1520241977
Nicut1420241986
Ghent1320241990
Cedarville1220231983
Yawkey920241967
Washburn920221974
Bowden820242000
Meadland720241997
Moundsville720241998
Monongah720221984
Pt Pleasant620231995
Valley Head620242008
Three Forks620242002
Spencer520231986
Clendenin520241979
Fayetteville519951980
Mcdonald520231993
Meadowville520241998
Clinton520242016

Yellow-throated Warbler Population Trend in Other States

alabamaarkansascaliforniadelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamarylandmichiganmississippimissourinew-jerseynorth-carolinaohiooklahomaoregonpennsylvaniasouth-carolinatennesseetexasvirginiawisconsin

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.