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

Song Sparrow Population Trend in West Virginia

All statesForest birds

Song Sparrow in West Virginia has held roughly steady: up 4% on the route-weighted index since 1968.

+4%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 Song Sparrow 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 Song Sparrow in West Virginia. See the full index history below.

Song Sparrow Population Forecast in West Virginia

If the recent trend holds, Song Sparrow in West Virginia is projected to rise about 10% by 2030 — from 25 in 2025 to a central estimate of 28 (95% range 24–31). A 5-year backtest shows a typical error of ±9.8%, with 60% of held-out values landing inside the 95% band.

+10%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 →
28Projected 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 →
24–3195% 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 →
±9.8%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, Song Sparrow in West Virginia is projected to rise about 10% by 2030 — from 25 in 2025 to a central estimate of 28 (95% range 24–31). A 5-year backtest shows a typical error of ±9.8%, with 60% 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 →
2026272431
2027272431
2028272431
2029282431
2030282431

Song Sparrow Survey Routes in West Virginia

Routes recording Song Sparrow 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 →
Meadland6320251997
Monongah5720221966
Mcdonald5720231987
Josephs Mill4720241993
Nicut4520251986
Pt Pleasant4220251973
Cedarville4120231982
Rockport4120251966
Clendenin4020251979
Valley Head3920251966
Clinton3920251966
Paradise3820251966
Welch3620251980
Martinsburg3420251966
Yawkey3320241966
Olcott3320241966
Ghent3220251978
Smithfield3220251993
Hanover3120251980
Breeden3120241986
Lost River3120251996
Hubbardstown3020251966
Slate3020251980
Clear Creek2920251988
Berryburg2919961975

Song Sparrow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawaregeorgiaidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseeutahvermontvirginiawashingtonwisconsinwyoming

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