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

Song Sparrow Population Trend in Georgia

All statesForest birds

Song Sparrow in Georgia has risen sharply: up 75% on the route-weighted index since 1971.

+75%Since 1971TrendPercent 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 →
47Routes 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 →
56YearsYears 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 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 increasecomputed 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 →

Song Sparrow has risen sharply in Georgia: up 75% on the route-weighted index since 1971.

Song Sparrow Population Forecast in Georgia

If the recent trend holds, Song Sparrow in Georgia is projected to rise about 57% by 2030 — from 1.3 in 2025 to a central estimate of 2.0 (95% range 0.93–3.0). A 5-year backtest shows a typical error of ±85.7%, with 40% of held-out values landing inside the 95% band.

+57%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 →
2.0Projected 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 →
0.93–3.095% 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 →
±85.7%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, Song Sparrow in Georgia is projected to rise about 57% by 2030 — from 1.3 in 2025 to a central estimate of 2.0 (95% range 0.93–3.0). A 5-year backtest shows a typical error of ±85.7%, with 40% of held-out values landing inside the 95% band.19672030
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 →
20261.90.873.0
20271.90.893.0
20281.90.903.0
20292.00.923.0
20302.00.933.0

Song Sparrow Survey Routes in Georgia

Routes recording Song 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 →
Mountain Cty2220251975
Hiram2120181987
Kite Lake1320252015
Baxter1220221975
Candler1120252009
Woodstock1120212006
Davis Crossroads720252011
Stockbridge620251990
Minter Tweed620062006
Ball Ground520252019
Baldwin520241967
Bowdon520251994
Workmore519811981
Pleasant Hill520252005
Amos Mill520222011
Athens420251979
Oakman420241970
Cartersville420251978
Shannon420191975
Hollonville 2420222019
Grovetown320032003
Linwood320231970
Tazewell319911988
Holly Sprs219991980
Deepstep220061988

Song Sparrow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawareidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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