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

Red-eyed Vireo Population Trend in Alabama

All statesForest birds

Red-eyed Vireo in Alabama has surged: up 97% on the route-weighted index since 1968.

+97%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 →
107Routes 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 Red-eyed 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 →

Red-eyed Vireo has surged in Alabama: up 97% on the route-weighted index since 1968.

Red-eyed Vireo Population Forecast in Alabama

If the recent trend holds, Red-eyed Vireo in Alabama is projected to stay roughly flat through 2030, near 12 (95% range 10–14). A 5-year backtest shows a typical error of ±3.8%, with 100% of held-out values landing inside the 95% band.

+2%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 →
12Projected 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 →
10–1495% 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 →
±3.8%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, Red-eyed Vireo in Alabama is projected to stay roughly flat through 2030, near 12 (95% range 10–14). A 5-year backtest shows a typical error of ±3.8%, with 100% 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 →
2026129.714
2027129.814
2028129.914
2029121014
2030121014

Red-eyed Vireo Survey Routes in Alabama

Routes recording Red-eyed 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 →
Liberty City5620111979
Borden Springs 25620242001
Liberty City 25020252017
Sprott-Cahaba Riv4620141999
Gainestown Ferry4220151999
Greensboro3620251966
Carrollton3520251994
Holt3520251993
Warrior Std2920251966
Nixburg 22720252000
Linden2620231968
Borden Sprng2619981993
Vina2520231996
Youngtown2320251993
Millerville2220251970
Blocton2220251969
Epes2120241980
Vernon1920221996
Wedowee1920231996
Helicon1920251996
Triana1920121999
Riverside1920131999
St Florian1620251967
Jena1620251981
Courtland1620231997

Red-eyed Vireo Population Trend in Other States

alaskaarkansascoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawashingtonwest-virginiawisconsinwyoming

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