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

Common Yellowthroat Population Trend in West Virginia

All statesForest birds

Common Yellowthroat in West Virginia has fallen sharply: down 57% on the route-weighted index since 1968.

-57%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 Common Yellowthroat 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 →

Common Yellowthroat has fallen sharply in West Virginia: down 57% on the route-weighted index since 1968.

Common Yellowthroat Population Forecast in West Virginia

If the recent trend holds, Common Yellowthroat in West Virginia is projected to fall about 43% by 2030 — from 6.7 in 2025 to a central estimate of 3.9 (95% range 1.3–6.4). A 5-year backtest shows a typical error of ±28.4%, with 80% of held-out values landing inside the 95% band.

-43%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 →
3.9Projected 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 →
1.3–6.495% 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 →
±28.4%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, Common Yellowthroat in West Virginia is projected to fall about 43% by 2030 — from 6.7 in 2025 to a central estimate of 3.9 (95% range 1.3–6.4). A 5-year backtest shows a typical error of ±28.4%, with 80% 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 →
20264.41.97.0
20274.31.76.8
20284.11.66.7
20294.01.56.6
20303.91.36.4

Common Yellowthroat Survey Routes in West Virginia

Routes recording Common Yellowthroat 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 →
Bismark3020251976
Ruthbelle1920251975
Pt Pleasant1820251973
Hubbardstown1820251966
Mcdonald1720231987
Valley Head1620251966
Smithfield1620251993
Paradise1420251966
Richwood1420251980
Bebee1420251972
Henderson1420232002
Smoot1320251980
Glady1320252001
Greer1220231966
Moundsville1120251972
Bemis1120252001
Berryburg1019961975
Cedarville920231982
Green Bank920251977
Mt Storm919751966
Spencer820241986
Fayetteville819961980
Meadowville820251972
Ringgold720252025
Clendenin620251979

Common Yellowthroat Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwisconsinwyoming

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