BirdAnalyst
Species · Georgia · BBS 2025 Release · 1966–2024

Field Sparrow Population Trend in Georgia

All statesGeneralists

Field Sparrow in Georgia has fallen sharply: down 71% on the route-weighted index since 1968.

-71%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 →
97Routes 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 Field 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 →

Field Sparrow has fallen sharply in Georgia: down 71% on the route-weighted index since 1968.

Field Sparrow Population Forecast in Georgia

If the recent trend holds, Field Sparrow in Georgia is projected to fall about 24% by 2029 — from 5.3 in 2024 to a central estimate of 4.0 (95% range 0.00–8.8). A 5-year backtest shows a typical error of ±23.7%, with 100% of held-out values landing inside the 95% band.

-24%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 →
4.0Projected 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 →
0.00–8.895% 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 →
±23.7%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, Field Sparrow in Georgia is projected to fall about 24% by 2029 — from 5.3 in 2024 to a central estimate of 4.0 (95% range 0.00–8.8). A 5-year backtest shows a typical error of ±23.7%, 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 →
20254.30.009.2
20264.30.009.1
20274.20.009.0
20284.10.008.9
20294.00.008.8

Field Sparrow Survey Routes in Georgia

Routes recording Field 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 →
Philema3920242010
Henderson3020241973
Doles2720221975
Stoney Point2720072007
Metasville2320001997
Davis Crossroads2320212011
Finleyson2120241976
Dickey1920182005
Owensboro1820242010
Wadley1520241977
Hawkinsville1320241966
Rentz1320241977
Bethany1320242018
Lacross1220211973
Boston1220241975
Amos Mill1220222011
Fitzgerald1120241975
Ball Ground1120212019
Cuthbert1020241967
Tazewell1020241967
Barges1020242011
Minter Tweed920242016
Irwinton920242016
Lakeview920242006
Bowdon820181973

Field Sparrow Population Trend in Other States

alabamaarkansascoloradoconnecticutdelawarefloridaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.