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

Red-eyed Vireo Population Trend in Indiana

All statesForest birds

Red-eyed Vireo in Indiana has surged: up 133% on the route-weighted index since 1968.

+133%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 →
67Routes 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 IndianaNotable 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 Indiana: up 133% on the route-weighted index since 1968.

Red-eyed Vireo Population Forecast in Indiana

If the recent trend holds, Red-eyed Vireo in Indiana is projected to rise about 34% by 2030 — from 5.6 in 2025 to a central estimate of 7.5 (95% range 4.1–11). A 5-year backtest shows a typical error of ±15.2%, with 100% of held-out values landing inside the 95% band.

+34%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 →
7.5Projected 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 →
4.1–1195% 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 →
±15.2%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 Indiana is projected to rise about 34% by 2030 — from 5.6 in 2025 to a central estimate of 7.5 (95% range 4.1–11). A 5-year backtest shows a typical error of ±15.2%, 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 →
20267.23.911
20277.34.011
20287.34.011
20297.44.111
20307.54.111

Red-eyed Vireo Survey Routes in Indiana

Routes recording Red-eyed Vireo in Indiana.
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 →
Belmont7820241981
Hoosier6620251990
New Phila2520251982
Georgia2320251999
Clear Spring1820251981
Corydon1820251966
Indian Spgs1520251982
Wallace1120241999
Pimento920251981
Celestine820251979
Cross Plains820251999
Azalia620251982
New Castle620242016
Packertown520041967
Middletown520251966
Cumback520251966
Fowler420211968
Spencer420241967
Brookville420251966
Frankfort420222000
Decatur420192000
Indiana Dune420251993
Knox320251982
Millersburg320241981
Scottsburg320251982

Red-eyed Vireo Population Trend in Other States

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

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