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Species · Alabama · BBS 2026 Release · 1966–2025

Hooded Warbler Population Trend in Alabama

All statesForest birds

Hooded Warbler in Alabama has surged: up 392% on the route-weighted index since 1968.

+392%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 →
101Routes 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 Hooded Warbler 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 →

Hooded Warbler has surged in Alabama: up 392% on the route-weighted index since 1968.

Hooded Warbler Population Forecast in Alabama

If the recent trend holds, Hooded Warbler in Alabama is projected to fall about 27% by 2030 — from 7.5 in 2025 to a central estimate of 5.5 (95% range 4.3–6.8). A 5-year backtest shows a typical error of ±24.1%, with 40% of held-out values landing inside the 95% band.

-27%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 →
5.5Projected 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 →
4.3–6.895% 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 →
±24.1%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, Hooded Warbler in Alabama is projected to fall about 27% by 2030 — from 7.5 in 2025 to a central estimate of 5.5 (95% range 4.3–6.8). A 5-year backtest shows a typical error of ±24.1%, with 40% 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 →
20265.24.06.5
20275.34.16.5
20285.44.16.6
20295.44.26.7
20305.54.36.8

Hooded Warbler Survey Routes in Alabama

Routes recording Hooded Warbler 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 →
Carrollton2820251993
Liberty City 22720252017
Riderwood2320231966
Nixburg 22220252000
Greensboro1920251966
Linden1820231968
Holt1820251993
Autaugaville1820251997
Grove Hill1720231983
Millerville1620251979
South1520251972
Blocton1520251969
Warrior Std1420251967
Citronelle1420231997
Gainestown Ferry1420151999
Billingsley1320251967
Wedowee1320231996
Helicon1220251996
Howard1120251967
Maytown1120251966
Sprott-Cahaba Riv1120141999
Cottonton1020251969
Wedgeworth1020251979
Appleton1020231993
Castleberry920251966

Hooded Warbler Population Trend in Other States

arkansasconnecticutdelawarefloridageorgiaillinoisindianakentuckylouisianamarylandmassachusettsmichiganmississippimissourinew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvirginiawest-virginiawisconsin

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