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Species · Alabama · BBS 2026 Release · 1966–2025

Yellow-throated Vireo Population Trend in Alabama

All statesForest birds

Yellow-throated Vireo in Alabama has surged: up 349% on the route-weighted index since 1968.

+349%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 →
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 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 349% 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 43% by 2030 — from 4.6 in 2025 to a central estimate of 2.6 (95% range 1.6–3.7). A 5-year backtest shows a typical error of ±44.1%, with 0% of held-out values landing inside the 95% band.

-43%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 →
2.6Projected 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 →
1.6–3.795% 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 →
±44.1%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 43% by 2030 — from 4.6 in 2025 to a central estimate of 2.6 (95% range 1.6–3.7). A 5-year backtest shows a typical error of ±44.1%, with 0% 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 →
20262.51.53.6
20272.51.53.6
20282.61.53.6
20292.61.63.6
20302.61.63.7

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 →
Sunny Eve1720251966
Sprott-Cahaba Riv1320141999
Calebee1220251993
Elamville1120251994
Liberty City 21120252017
Cottonton1020251973
Harrell920251968
Sprague920251998
Wedgeworth920251979
Helicon920251997
Greensboro820251966
Whitehall820251984
Greensport720251966
Brantley720251972
Blocton720251969
Epes720241980
Holt720251993
Rock Chapel720242001
Nixburg 2720252000
Pine Grove620251968
Millerville620251971
Riderwood620231966
Linden620231968
Warrior Std620251971
Lanett620241967

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 2026-08-14.