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

American Goldfinch Population Trend in Alabama

All statesForest birds

American Goldfinch in Alabama has increased: up 39% on the route-weighted index since 1968.

+39%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 →
78Routes 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 American Goldfinch 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 American Goldfinch in Alabama. See the full index history below.

American Goldfinch Population Forecast in Alabama

If the recent trend holds, American Goldfinch in Alabama is projected to rise about 55% by 2030 — from 1.3 in 2025 to a central estimate of 2.0 (95% range 1.1–2.8). A 5-year backtest shows a typical error of ±43.3%, with 80% of held-out values landing inside the 95% band.

+55%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 →
1.1–2.895% 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 →
±43.3%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, American Goldfinch in Alabama is projected to rise about 55% by 2030 — from 1.3 in 2025 to a central estimate of 2.0 (95% range 1.1–2.8). A 5-year backtest shows a typical error of ±43.3%, with 80% 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 →
20261.91.12.7
20271.91.12.8
20281.91.12.8
20292.01.12.8
20302.01.12.8

American Goldfinch Survey Routes in Alabama

Routes recording American Goldfinch 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 →
Stevenson920241998
Oneonta920251997
Hillsboro719961967
Borden Sprng719981993
Greensport620251967
Wallsboro619951995
Holt620251993
Woodville620241994
Brooksville620251985
Borden Springs 2620242001
Pine Grove520251966
Dawson519971966
Rock Chapel520071996
Calebee520231993
Talladega520251996
Triana520121999
Whitehall420241991
Childersburg419981995
Nixburg 2420242001
St Florian320251967
Warrior Std320251967
Grangeburg320032000
Guntersville320241980
Liberty City320111980
Wheeler Dam320251993

American Goldfinch Population Trend in Other States

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

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