BirdAnalyst
Species · North Carolina · BBS 2026 Release · 1966–2025

White-eyed Vireo Population Trend in North Carolina

All statesForest birds

White-eyed Vireo in North Carolina has surged: up 161% on the route-weighted index since 1968.

+161%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 →
102Routes 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 White-eyed Vireo Trends in North CarolinaNotable 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 North Carolina: up 161% on the route-weighted index since 1968.

White-eyed Vireo Population Forecast in North Carolina

If the recent trend holds, White-eyed Vireo in North Carolina is projected to stay roughly flat through 2030, near 6.9 (95% range 4.8–9.1). A 5-year backtest shows a typical error of ±12.5%, with 100% of held-out values landing inside the 95% band.

-3%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 →
6.9Projected 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 →
4.8–9.195% 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 →
±12.5%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, White-eyed Vireo in North Carolina is projected to stay roughly flat through 2030, near 6.9 (95% range 4.8–9.1). A 5-year backtest shows a typical error of ±12.5%, 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 →
20266.74.68.8
20276.74.68.9
20286.84.78.9
20296.94.79.0
20306.94.89.1

White-eyed Vireo Survey Routes in North Carolina

Routes recording White-eyed Vireo in North Carolina.
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 →
Washington5520252001
Spring Hope5120252002
Dismal Swamp3120241993
Rheasville2620172005
Maple Hill2520231995
Cayton2520242010
Jamesville2320251983
California 22220252014
California1820131972
Jackson1820171995
Goldston1820222004
Reelsboro1620191997
Shallotte1519911966
Bullock1520251997
Mashoes1419821971
Merrimon1320231968
Saxapahaw1320231967
Eden1320251987
Durham1320251991
Gupton1320252001
Chowan River1320062002
Supply1220251992
Newport1220231995
Pinetops1220241997
Dortches1220251990

White-eyed Vireo Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganmississippimissourinebraskanew-jerseynew-yorkohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvirginiawest-virginiawisconsin

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