BirdAnalyst
Species · Georgia · BBS 2026 Release · 1966–2025

House Sparrow Population Trend in Georgia

All statesGeneralists

House Sparrow in Georgia has collapsed: down 95% on the route-weighted index since 1968.

-95%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 →
88Routes 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 House Sparrow Trends in GeorgiaNotable 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 →

House Sparrow has collapsed in Georgia: down 95% on the route-weighted index since 1968.

House Sparrow Population Forecast in Georgia

If the recent trend holds, House Sparrow in Georgia is projected to fall about 100% by 2030 — from 2.2 in 2025 to a central estimate of 0.00 (95% range 0.00–11). A 5-year backtest shows a typical error of ±536.4%, with 40% of held-out values landing inside the 95% band.

-100%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 →
0.00Projected 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 →
0.00–1195% 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 →
±536.4%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, House Sparrow in Georgia is projected to fall about 100% by 2030 — from 2.2 in 2025 to a central estimate of 0.00 (95% range 0.00–11). A 5-year backtest shows a typical error of ±536.4%, with 40% 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 →
20260.000.0011
20270.000.0011
20280.000.0011
20290.000.0011
20300.000.0011

House Sparrow Survey Routes in Georgia

Routes recording House Sparrow in Georgia.
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 →
Vidalia2820251995
Fowlstown2320161967
Shiloh2020252012
Metasville1220001997
Everett City1020191976
Maxeys1020241966
Washington1020111975
Wadley1020251977
Dickey1020182013
Doles920151975
Waycross819841970
Hiram820181975
Finleyson720251976
Baxley619841966
Fitzgerald620251966
Macon620251975
Bowdon620251973
Linwood620191970
Douglas619841978
Owensboro620252010
Stoney Point620072007
Cuthbert520251967
Lyons519941966
Henderson520221973
Jacksonboro519941967

House Sparrow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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