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

Red-eyed Vireo Population Trend in Virginia

All statesForest birds

Red-eyed Vireo in Virginia has risen sharply: up 58% on the route-weighted index since 1968.

+58%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 →
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 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 57% 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 2029, near 33 (95% range 28–39). A 5-year backtest shows a typical error of ±2.5%, with 100% of held-out values landing inside the 95% band.

+8%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 →
33Projected 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 →
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 →
±2.5%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 Virginia is projected to stay roughly flat through 2029, near 33 (95% range 28–39). A 5-year backtest shows a typical error of ±2.5%, with 100% 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 →
2025322738
2026322738
2027332738
2028332738
2029332839

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 →
New Market7420241992
Front Royal7220241993
Covington6920241966
Iron Mountain 36520232014
Pw Forest Pk6420091992
Iron Mtn.6420111992
Port Royal6220191977
Brandon6220241992
Gr North Mtn6020241993
Iron Mountain 25920132012
Glenwood5520231992
Shenandoa Np5520241993
Big Meadows5320241993
Brodnax5020241973
Tryme4720241975
Saltville4620241969
Mountain Lk.4620181992
Surry4320241977
Isom3920241969
Quinby3920241966
Branchville3920241966
Finchley3920211994
Nat Tunnel3920241981
Irisburg3820241976
Appomattox3820241995

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 2026-05-22.