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

Red-eyed Vireo Population Trend in Tennessee

All statesForest birds

Red-eyed Vireo in Tennessee has surged: up 139% on the route-weighted index since 1968.

+139%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 →
55Routes 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 TennesseeNotable 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 Tennessee: up 139% on the route-weighted index since 1968.

Red-eyed Vireo Population Forecast in Tennessee

If the recent trend holds, Red-eyed Vireo in Tennessee is projected to rise about 64% by 2030 — from 13 in 2025 to a central estimate of 21 (95% range 16–26). A 5-year backtest shows a typical error of ±39.5%, with 20% of held-out values landing inside the 95% band.

+64%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 →
21Projected 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 →
16–2695% 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 →
±39.5%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 Tennessee is projected to rise about 64% by 2030 — from 13 in 2025 to a central estimate of 21 (95% range 16–26). A 5-year backtest shows a typical error of ±39.5%, with 20% 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 →
2026201625
2027211626
2028211626
2029211626
2030211626

Red-eyed Vireo Survey Routes in Tennessee

Routes recording Red-eyed Vireo in Tennessee.
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 →
Mcfarland6519931967
Mecca5720231994
Tellico5620251995
Trace Collinwood5520182015
Fish Springs5020231966
Jones Gap4720191982
Walland4319891966
Trace Lewis4320172013
Harbuck3920231994
Signal Mtn3520251979
Collinwood3520251966
Smokey Jct2920221966
Willis Sprng2820231994
Big Sandy2620251966
Silver Pt2620241966
Silerton2320241966
Cades Cove2320251989
Red Bank2119781966
Cornpone2020241990
Indian Mound 22020232004
Jasper1920251967
Newfound Gap1920251990
Sweetlips1620231969
Lewis Forest1320251966
Bradyville1320211966

Red-eyed Vireo Population Trend in Other States

alabamaalaskaarkansascoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatexasvermontvirginiawashingtonwest-virginiawisconsinwyoming

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