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

Chipping Sparrow Population Trend in West Virginia

All statesForest birds

Chipping Sparrow in West Virginia has declined: down 41% on the route-weighted index since 1968.

-41%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 Chipping 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 Chipping Sparrow in West Virginia. See the full index history below.

Chipping Sparrow Population Forecast in West Virginia

If the recent trend holds, Chipping Sparrow in West Virginia is projected to stay roughly flat through 2030, near 12 (95% range 7.5–17). A 5-year backtest shows a typical error of ±4.9%, with 100% of held-out values landing inside the 95% band.

-7%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 →
12Projected 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 →
7.5–1795% 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 →
±4.9%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, Chipping Sparrow in West Virginia is projected to stay roughly flat through 2030, near 12 (95% range 7.5–17). A 5-year backtest shows a typical error of ±4.9%, 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 →
2026138.117
2027138.017
2028127.817
2029127.617
2030127.517

Chipping Sparrow Survey Routes in West Virginia

Routes recording Chipping 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 →
Martinsburg4320251966
Sleepy Creek4119901966
Rio3719951974
Hix3620251970
Mt Storm3419751966
Ringgold3420252025
Lost River2820251996
Ruthbelle2720251975
Berryburg2519961975
Denmar2220251980
Mcdonald2220231987
Shanghai2220251995
Josephs Mill2120241993
Albright2019741966
Green Bank1920251977
Bismark1920251976
Ghent1720251978
Three Forks1720251971
Glade Run1620021988
Henderson1620232002
Valley Head1520251966
Yellow Spg1520231972
Smoot1420251980
Paradise1320251966
Mo Of Seneca1320251969

Chipping Sparrow 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.