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

Forest Birds In Alabama

All statesAlabama

59 species in this guild. As a group they are +4%Guild trendA mean-index aggregate across the species in this group — the structural direction of the guild, with individual-species noise smoothed out.Full methodology → since 1968.

Guild SignalsNotable 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 forest birds in Alabama. See the full index history below.

Forest Birds In Alabama Population Forecast

If the recent trend holds, Forest birds in Alabama is projected to fall about 17% by 2030 — from 7.5 in 2025 to a central estimate of 6.3 (95% range 5.3–7.2). A 5-year backtest shows a typical error of ±11.7%, with 60% of held-out values landing inside the 95% band.

-17%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 →
6.3Projected 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 →
5.3–7.295% 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 →
±11.7%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, Forest birds in Alabama is projected to fall about 17% by 2030 — from 7.5 in 2025 to a central estimate of 6.3 (95% range 5.3–7.2). A 5-year backtest shows a typical error of ±11.7%, with 60% 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 →
20266.25.37.1
20276.25.37.1
20286.25.37.2
20296.25.37.2
20306.35.37.2

Member Species In Alabama

Forest birds species in Alabama.
TrendPercent 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 →
Yellow WarblerParulidae-95%
Blue-winged WarblerParulidae-88%
OvenbirdParulidae-82%
Marsh WrenTroglodytidae-79%
Field SparrowPasserellidae-76%
Gray CatbirdMimidae-70%
Baltimore OrioleIcteridae-65%
Orchard OrioleIcteridae-58%
Eastern TowheePasserellidae-51%
Prothonotary WarblerParulidae-48%
Blue JayCorvidae-46%
Common YellowthroatParulidae-42%
Wood ThrushTurdidae-40%
Black-throated Green WarblerParulidae-37%
Yellow-breasted ChatIcteriidae-36%
American RedstartParulidae-25%
Brown ThrasherMimidae-23%
Indigo BuntingCardinalidae-22%
American RobinTurdidae-21%
Cerulean WarblerParulidae-19%
Prairie WarblerParulidae-19%
Red-cockaded WoodpeckerPicidae-11%
Bachman's SparrowPasserellidae-8%
Brown-headed NuthatchSittidae-7%
Northern CardinalCardinalidae-7%
Red-headed WoodpeckerPicidae-1%
Yellow-billed CuckooCuculidae+1%
Black-and-white WarblerParulidae+2%
Northern House WrenTroglodytidae+3%
Downy WoodpeckerPicidae+9%
Summer TanagerCardinalidae+19%
Hairy WoodpeckerPicidae+21%
Carolina ChickadeeParidae+24%
Blue GrosbeakCardinalidae+28%
Kentucky WarblerParulidae+31%
American GoldfinchFringillidae+39%
Cedar WaxwingBombycillidae+44%
Chipping SparrowPasserellidae+45%
Red-bellied WoodpeckerPicidae+54%
Ruby-throated HummingbirdTrochilidae+54%
Yellow-throated WarblerParulidae+80%
Pileated WoodpeckerPicidae+86%
Carolina WrenTroglodytidae+93%
Red-eyed VireoVireonidae+97%
Tufted TitmouseParidae+136%
Eastern BluebirdTurdidae+137%
White-eyed VireoVireonidae+176%
Louisiana WaterthrushParulidae+185%
Scarlet TanagerCardinalidae+228%
Pine WarblerParulidae+260%
Blue-headed VireoVireonidae+280%
Yellow-throated VireoVireonidae+349%
Hooded WarblerParulidae+392%
Worm-eating WarblerParulidae+438%
Blue-gray GnatcatcherPolioptilidae+567%
White-breasted NuthatchSittidae+647%
Northern ParulaParulidae+691%
Song SparrowPasserellidae19×
Swainson's WarblerParulidae32×

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