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

Bald Eagle Population Trend in Alabama

All statesGeneralists

Bald Eagle in Alabama has surged: up 150% on the route-weighted index since 1999.

+150%Since 1999TrendPercent 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 →
23Routes 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 →
26YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Bald Eagle 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 →

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 →

Bald Eagle has surged in Alabama: up 150% on the route-weighted index since 1999.

Bald Eagle Population Forecast in Alabama

If the recent trend holds, Bald Eagle in Alabama is projected to rise about 43% by 2029 — from 0.05 in 2024 to a central estimate of 0.08 (95% range 0.01–0.14). A 5-year backtest shows a typical error of ±28.9%, with 100% of held-out values landing inside the 95% band.

+43%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 →
0.08Projected 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 →
0.01–0.1495% 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 →
±28.9%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, Bald Eagle in Alabama is projected to rise about 43% by 2029 — from 0.05 in 2024 to a central estimate of 0.08 (95% range 0.01–0.14). A 5-year backtest shows a typical error of ±28.9%, with 100% of held-out values landing inside the 95% band.19922029
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 →
20250.070.010.14
20260.070.010.14
20270.070.010.14
20280.070.010.14
20290.080.010.14

Bald Eagle Survey Routes in Alabama

Routes recording Bald Eagle 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 →
Sprott-Cahaba Riv520141999
Wheeler Dam420232008
Autaugaville320032003
Swaim220212021
Wedgeworth220222008
Elkmont220212016
Triana220122001
Pine Grove120242019
Latham 2120212021
Smyer Lake120242024
Riderwood120212021
Lanett120211992
Castleberry120192019
Guntersville120141997
Mentone120232023
Rock Chapel120222006
Appleton120232023
Madrid120052005
Georgetown120192019
Stevenson120242024
St. Elmo120212006
Riverside120122004
Gainestown Ferry120152006

Bald Eagle Population Trend in Other States

alaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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