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Species · Alabama · BBS 2026 Release · 1966–2025

Ruby-throated Hummingbird Population Trend in Alabama

All statesForest birds

Ruby-throated Hummingbird in Alabama has risen sharply: up 54% on the route-weighted index since 1968.

+54%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 →
100Routes 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 Ruby-throated Hummingbird 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 →

Ruby-throated Hummingbird has risen sharply in Alabama: up 54% on the route-weighted index since 1968.

Ruby-throated Hummingbird Population Forecast in Alabama

If the recent trend holds, Ruby-throated Hummingbird in Alabama is projected to rise about 37% by 2030 — from 0.55 in 2025 to a central estimate of 0.75 (95% range 0.48–1.0). A 5-year backtest shows a typical error of ±29.6%, with 80% of held-out values landing inside the 95% band.

+37%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 →
0.75Projected 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 →
0.48–1.095% 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 →
±29.6%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, Ruby-throated Hummingbird in Alabama is projected to rise about 37% by 2030 — from 0.55 in 2025 to a central estimate of 0.75 (95% range 0.48–1.0). A 5-year backtest shows a typical error of ±29.6%, with 80% 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 →
20260.730.461.0
20270.740.461.0
20280.740.471.0
20290.750.481.0
20300.750.481.0

Ruby-throated Hummingbird Survey Routes in Alabama

Routes recording Ruby-throated Hummingbird 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 →
Carrollton620251993
Linden420231968
Gastonburg420242000
Drummond420212007
Trade320111970
Wallsboro320211969
Brundidge320171970
Whitehouse320251980
Epes320241983
Woodville320242007
Sprott-Cahaba Riv320141999
Dearmanville219771967
Smyer Lake220251972
Riderwood220221967
Greensboro220251970
Billingsley220221973
Newton220231970
Mclellan220001980
Blocton220251969
Wedgeworth220221979
Liberty City220091984
Youngtown220101995
Mentone220231993
Holt220251993
Borden Sprng219961994

Ruby-throated Hummingbird Population Trend in Other States

arkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsin

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