BirdAnalyst
Species · BCR 23 · BBS 2026 Release · 1966–2025

Red-eyed Vireo In Prairie Hardwood Transition

All regionsPrairie Hardwood TransitionForest birds

Red-eyed Vireo in Prairie Hardwood Transition has surged: up 126% on the route-weighted index since 1968.

+126%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 →
161Routes In RegionSurvey 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 SignalsNotable 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 Prairie Hardwood Transition: up 126% on the route-weighted index since 1968.

Red-eyed Vireo In Prairie Hardwood Transition Population Forecast

If the recent trend holds, Red-eyed Vireo in Prairie Hardwood Transition is projected to rise about 25% by 2030 — from 8.1 in 2025 to a central estimate of 10 (95% range 7.8–12). A 5-year backtest shows a typical error of ±24.6%, with 60% of held-out values landing inside the 95% band.

+25%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 →
10Projected 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 →
7.8–1295% 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 →
±24.6%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 Prairie Hardwood Transition is projected to rise about 25% by 2030 — from 8.1 in 2025 to a central estimate of 10 (95% range 7.8–12). A 5-year backtest shows a typical error of ±24.6%, with 60% 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 →
20269.77.412
20279.87.512
20289.97.612
2029107.712
2030107.812

Routes In Prairie Hardwood Transition

Routes recording Red-eyed Vireo in Prairie Hardwood Transition.
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 →
ScottvilleMICHIGAN812025
GreshamWISCONSIN662025
Oconto FallsWISCONSIN402023
Pigeon CreekWISCONSIN402025
Stevens PtWISCONSIN372023
CadottWISCONSIN282025
HatfieldWISCONSIN281998
LoraineWISCONSIN272025
HungerfordMICHIGAN262025
MerrillWISCONSIN262025
CumberlandWISCONSIN242025
MatherWISCONSIN242023
RemusMICHIGAN212025
Wis RapidsWISCONSIN212023
PrincetonWISCONSIN202024
MontereyMICHIGAN192025
Barry S.G.A.MICHIGAN192012
EvergreenMINNESOTA172025
GrimmsWISCONSIN172021
BravoMICHIGAN162023
Chippewa Lk.MICHIGAN162025
CascoWISCONSIN142025
Big Blue LkMICHIGAN132025
HowardsvilleMICHIGAN132025
New BuffaloMICHIGAN132014

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