BirdAnalyst
Species · BCR 26 · BBS 2025 Release · 1966–2024

White-eyed Vireo In Mississippi Alluvial Valley

All regionsMississippi Alluvial ValleyForest birds

White-eyed Vireo in Mississippi Alluvial Valley has surged: up 206% on the route-weighted index since 1968.

+206%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 →
71Routes 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 →
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 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 →

White-eyed Vireo has surged in Mississippi Alluvial Valley: up 206% on the route-weighted index since 1968.

Forecast

If the recent trend holds, White-eyed Vireo in Mississippi Alluvial Valley is projected to stay roughly flat through 2029, near 11 (95% range 6.8–14). A 5-year backtest shows a typical error of ±10.7%, with 100% of held-out values landing inside the 95% band.

+3%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 →
11Projected 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 →
6.8–1495% 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 →
±10.7%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, White-eyed Vireo in Mississippi Alluvial Valley is projected to stay roughly flat through 2029, near 11 (95% range 6.8–14). A 5-year backtest shows a typical error of ±10.7%, 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 →
2025106.314
2026106.514
2027106.614
2028106.714
2029116.814

Routes In Mississippi Alluvial Valley

Routes recording White-eyed Vireo in Mississippi Alluvial Valley.
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 →
AtchafalayaLOUISIANA752024
Tensas NwrLOUISIANA472024
Morgan CityLOUISIANA311986
Delta N.F.MISSISSIPPI302021
RamahLOUISIANA272024
ShawLOUISIANA262024
BerwickLOUISIANA262018
Warren VickMISSISSIPPI252022
Panther Swamp NwrMISSISSIPPI212018
TallahatchieMISSISSIPPI192024
Crowley'S RidgeARKANSAS182024
CarlisleLOUISIANA171988
LaroseLOUISIANA151992
Dahomey NwrMISSISSIPPI152024
GonzalesLOUISIANA142019
BelairLOUISIANA132024
Bardwell 2KENTUCKY112024
Rayville 2LOUISIANA112024
KraemerLOUISIANA102024
DundeeMISSISSIPPI102022
South BendARKANSAS92023
KeystoneLOUISIANA92013
FrogmoreLOUISIANA92024
ConcordLOUISIANA92019
Eagle LakeMISSISSIPPI82024

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.