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

American Goldfinch Population Trend in Alabama

All statesGeneralists

American Goldfinch in Alabama has increased: up 41% on the route-weighted index since 1968.

+41%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 →
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 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 31% by 2029 — from 1.5 in 2024 to a central estimate of 2.0 (95% range 1.2–2.8). A 5-year backtest shows a typical error of ±40.9%, with 80% of held-out values landing inside the 95% band.

+31%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 →
2.0Projected 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 →
1.2–2.895% 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 →
±40.9%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 31% by 2029 — from 1.5 in 2024 to a central estimate of 2.0 (95% range 1.2–2.8). A 5-year backtest shows a typical error of ±40.9%, with 80% 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 →
20251.91.12.7
20261.91.12.8
20272.01.12.8
20282.01.12.8
20292.01.22.8

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 →
Brooksville1420231985
Swaim1220241966
Elkmont1120241990
Oneonta1020231997
Wheeler Dam920231993
Stevenson920241998
Holt820231993
Hillsboro719961967
Borden Sprng719981993
Wallsboro619951995
Woodville620241994
Borden Springs 2620242001
St Florian520241967
Dawson519971966
Greensport520241967
Rock Chapel520071996
Calebee520231993
Triana520121999
Whitehall420241991
Childersburg419981995
Liberty City 2420242017
Nixburg 2420242001
Pine Grove320241966
Millerville320241967
Warrior Std320231967

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 2026-05-22.