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

Chipping Sparrow Population Trend in Alabama

All statesForest birds

Chipping Sparrow in Alabama has increased: up 45% on the route-weighted index since 1968.

+45%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 →
93Routes 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 AlabamaNotable 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 Alabama. See the full index history below.

Chipping Sparrow Population Forecast in Alabama

If the recent trend holds, Chipping Sparrow in Alabama is projected to stay roughly flat through 2030, near 7.8 (95% range 5.4–10). A 5-year backtest shows a typical error of ±8.8%, with 100% of held-out values landing inside the 95% band.

-8%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 →
7.8Projected 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 →
5.4–1095% 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 →
±8.8%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, Chipping Sparrow in Alabama is projected to stay roughly flat through 2030, near 7.8 (95% range 5.4–10). A 5-year backtest shows a typical error of ±8.8%, 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 →
20267.45.19.8
20277.55.29.9
20287.65.310
20297.75.310
20307.85.410

Chipping Sparrow Survey Routes in Alabama

Routes recording Chipping Sparrow in Alabama.
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 →
Millerville2920251966
Lakeview2820251999
Talladega2720251996
Woodville2620241994
Stevenson2520241996
Blocton2020251969
St Florian1920251967
Trade1920241966
Pine Grove1920251966
Liberty City1820111980
Wallsboro1720251971
Carrollton1720251993
Hillsboro1619961966
Howard1520251966
Courtland1520231997
Nixburg 21520252002
Valhermoso Spgs1420101966
Greensport1420251966
Mt Olive1420251966
Mentone1420231993
Valhermoso Spg 21420142014
Kymulga1420252000
Carter Grove1420232002
Wedowee1420231996
Odenville1320251996

Chipping Sparrow Population Trend in Other States

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

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