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

Red-eyed Vireo Population Trend in Virginia

All statesForest birds

Red-eyed Vireo in Virginia has risen sharply: up 59% on the route-weighted index since 1968.

+59%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 →
88Routes 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 VirginiaNotable 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 risen sharply in Virginia: up 59% on the route-weighted index since 1968.

Red-eyed Vireo Population Forecast in Virginia

If the recent trend holds, Red-eyed Vireo in Virginia is projected to stay roughly flat through 2030, near 33 (95% range 28–39). A 5-year backtest shows a typical error of ±2.4%, with 100% of held-out values landing inside the 95% band.

+4%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 →
33Projected 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 →
28–3995% 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 →
±2.4%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 Virginia is projected to stay roughly flat through 2030, near 33 (95% range 28–39). A 5-year backtest shows a typical error of ±2.4%, 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 →
2026322738
2027332738
2028332738
2029332839
2030332839

Red-eyed Vireo Survey Routes in Virginia

Routes recording Red-eyed Vireo in Virginia.
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 →
Covington6920251966
Shenandoa Np6920251993
Hall6520251967
Brandon6520251992
Iron Mountain 36520232014
Pw Forest Pk6420091992
Iron Mtn.6420111992
Front Royal6420251993
Port Royal6120251977
Nat Tunnel5920251981
Iron Mountain 25920132012
Brodnax5720251973
New Market5620251992
Glenwood5520231992
Big Meadows5320251993
Gr North Mtn5120251993
Mountain Lk.4620181992
Pine Mtn.4220251996
Rural Retrt4120251982
Isom3920241969
Branchville3920241966
Finchley3920211994
Appomattox3820241995
Carters Brdg 23820252015
Walkers3820231992

Red-eyed Vireo Population Trend in Other States

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

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