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

Downy Woodpecker Population Trend in Alabama

All statesForest birds

Downy Woodpecker in Alabama has held roughly steady: up 6% on the route-weighted index since 1968.

+6%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 →
109Routes 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 Downy Woodpecker 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 Downy Woodpecker in Alabama. See the full index history below.

Downy Woodpecker Population Forecast in Alabama

If the recent trend holds, Downy Woodpecker in Alabama is projected to stay roughly flat through 2029, near 3.1 (95% range 2.0–4.1). A 5-year backtest shows a typical error of ±6.9%, with 100% of held-out values landing inside the 95% band.

-5%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 →
3.1Projected 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 →
2.0–4.195% 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 →
±6.9%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, Downy Woodpecker in Alabama is projected to stay roughly flat through 2029, near 3.1 (95% range 2.0–4.1). A 5-year backtest shows a typical error of ±6.9%, with 100% 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 →
20253.12.04.1
20263.12.04.1
20273.12.04.1
20283.12.04.1
20293.12.04.1

Downy Woodpecker Survey Routes in Alabama

Routes recording Downy Woodpecker 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 →
Greensboro1120241966
Borden Springs 21020242001
St Florian820231967
Cottonton820241966
Liberty City820111979
Bon Secour820231998
Riverside820131999
Hillsboro719961966
Valhermoso Spgs720101966
Smyer Lake720241966
Wallsboro720211966
Warrior Std720241966
Epes720241980
Citronelle720231997
Triana720121999
Howard620241970
Brundidge620211966
Elamville620241984
Holt620241993
Wedowee620231996
Gainestown Ferry620151999
Mt Olive520241966
Linden520231970
Millry520231970
Alabama Pt520021966

Downy Woodpecker Population Trend in Other States

alaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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