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

Common Yellowthroat Population Trend in West Virginia

All statesForest birds

Common Yellowthroat in West Virginia has fallen sharply: down 61% on the route-weighted index since 1968.

-61%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 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 61% 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 41% by 2029 — from 6.5 in 2024 to a central estimate of 3.8 (95% range 1.3–6.3). A 5-year backtest shows a typical error of ±20.5%, with 100% of held-out values landing inside the 95% band.

-41%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 →
3.8Projected 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 →
1.3–6.395% 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 →
±20.5%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, Common Yellowthroat in West Virginia is projected to fall about 41% by 2029 — from 6.5 in 2024 to a central estimate of 3.8 (95% range 1.3–6.3). A 5-year backtest shows a typical error of ±20.5%, with 100% 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 →
20254.41.96.9
20264.31.86.8
20274.11.66.6
20284.01.56.5
20293.81.36.3

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 →
Bebee2020241972
Ruthbelle2020241975
Mcdonald1720231987
Glady1720242001
Valley Head1620241966
Bismark1620231976
Moundsville1520241972
Hubbardstown1420231966
Smithfield1420241993
Henderson1420232002
Meadowville1320241972
Meadland1220241997
Greer1220231966
Green Bank1020241977
Berryburg1019961975
Glade Run 21020242003
Bemis1020242001
Spencer920231986
Cedarville920231982
Mt Storm919751966
Martinsburg920241966
Fayetteville819961980
Richwood820241980
Bowden820241993
Smoot720241980

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 2026-05-22.