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Species · Alabama · BBS 2025 Release · 1966–2024

Hooded Warbler Population Trend in Alabama

All statesForest birds

Hooded Warbler in Alabama has surged: up 347% on the route-weighted index since 1968.

+347%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 →
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 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 347% 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 stay roughly flat through 2029, near 5.2 (95% range 4.2–6.3). A 5-year backtest shows a typical error of ±20.5%, with 40% of held-out values landing inside the 95% band.

-1%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 →
5.2Projected 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 →
4.2–6.395% 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 →
±20.5%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 stay roughly flat through 2029, near 5.2 (95% range 4.2–6.3). A 5-year backtest shows a typical error of ±20.5%, with 40% 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 →
20255.03.96.0
20265.04.06.1
20275.14.06.2
20285.24.16.2
20295.24.26.3

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 →
Riderwood2320231966
Holt2020241993
Linden1820231968
Wedgeworth1820241979
Greensboro1720241966
Grove Hill1720231983
Liberty City 21620242017
Citronelle1420231997
Gainestown Ferry1420151999
Millerville1320241979
Maytown1320231966
Wedowee1320231996
Carrollton1220241993
Warrior Std1120241967
Sprott-Cahaba Riv1120141999
Appleton1020231993
Latham 21020242005
Elamville920241985
Nixburg 2920242000
Mt Olive820241966
Cottonton820241969
Millry820231970
Epes820242007
Liberty City820111981
Vernon820221996

Hooded Warbler Population Trend in Other States

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

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