BirdAnalyst
Species · Tennessee · BBS 2025 Release · 1966–2024

Red-eyed Vireo Population Trend in Tennessee

All statesForest birds

Red-eyed Vireo in Tennessee has surged: up 156% on the route-weighted index since 1968.

+156%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 →
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 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 156% 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 37% by 2029 — from 16 in 2024 to a central estimate of 22 (95% range 17–26). A 5-year backtest shows a typical error of ±31.1%, with 20% of held-out values landing inside the 95% band.

+37%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 →
22Projected 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 →
17–2695% 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 →
±31.1%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, Red-eyed Vireo in Tennessee is projected to rise about 37% by 2029 — from 16 in 2024 to a central estimate of 22 (95% range 17–26). A 5-year backtest shows a typical error of ±31.1%, 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 →
2025211625
2026211726
2027211726
2028211726
2029221726

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
Trace Collinwood5520182015
Fish Springs5020231966
Jones Gap4720191982
Collinwood4320241966
Walland4319891966
Tellico4320241995
Trace Lewis4320172013
Harbuck3920231994
Big Sandy3520241966
Smokey Jct2920221966
Jasper2820241967
Willis Sprng2820231994
Cades Cove2820241989
Silver Pt2620241966
Lewis Forest2420241966
Silerton2320241966
Red Bank2119781966
Newfound Gap2120241990
Cornpone2020241990
Indian Mound 22020232004
Signal Mtn1820241979
Sweetlips1620231969
Elk Valley1620221970

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 2026-05-22.