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Species · Alabama · BBS 2025 Release · 1966–2024

Yellow-throated Vireo Population Trend in Alabama

All statesForest birds

Yellow-throated Vireo in Alabama has surged: up 284% on the route-weighted index since 1968.

+284%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 →
104Routes 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 Yellow-throated Vireo 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 →

Yellow-throated Vireo has surged in Alabama: up 284% on the route-weighted index since 1968.

Yellow-throated Vireo Population Forecast in Alabama

If the recent trend holds, Yellow-throated Vireo in Alabama is projected to fall about 35% by 2029 — from 3.7 in 2024 to a central estimate of 2.4 (95% range 1.5–3.3). A 5-year backtest shows a typical error of ±34.7%, with 20% of held-out values landing inside the 95% band.

-35%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 →
2.4Projected 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 →
1.5–3.395% 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 →
±34.7%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, Yellow-throated Vireo in Alabama is projected to fall about 35% by 2029 — from 3.7 in 2024 to a central estimate of 2.4 (95% range 1.5–3.3). A 5-year backtest shows a typical error of ±34.7%, with 20% 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 →
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Yellow-throated Vireo Survey Routes in Alabama

Routes recording Yellow-throated Vireo 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 →
Warrior Std1420241971
Cottonton1420241973
Sprott-Cahaba Riv1320141999
Sunny Eve920241966
Elamville920241994
Liberty City 2920242017
Sprague820241998
Blocton820241969
Calebee820241993
Epes720241980
Rock Chapel720242001
Riderwood620231966
Linden620231968
Greensboro620241966
Lanett620241967
Wedgeworth620241979
Fairview620242002
Eufaula620241996
Newton520242021
Jena520241981
Holt520241993
Oneonta520231996
Drummond520242001
Pine Grove420241968
Greensport420241966

Yellow-throated Vireo Population Trend in Other States

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

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