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

Red-eyed Vireo Population Trend in North Carolina

All statesForest birds

Red-eyed Vireo in North Carolina has increased: up 30% on the route-weighted index since 1968.

+30%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 →
112Routes 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 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 →

No notable trend signals for Red-eyed Vireo in North Carolina. See the full index history below.

Red-eyed Vireo Population Forecast in North Carolina

If the recent trend holds, Red-eyed Vireo in North Carolina is projected to stay roughly flat through 2030, near 16 (95% range 9.2–22). A 5-year backtest shows a typical error of ±22.2%, with 100% of held-out values landing inside the 95% band.

+2%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 →
16Projected 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 →
9.2–2295% 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 →
±22.2%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 North Carolina is projected to stay roughly flat through 2030, near 16 (95% range 9.2–22). A 5-year backtest shows a typical error of ±22.2%, 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 →
2026159.022
2027159.022
2028159.122
2029169.122
2030169.222

Red-eyed Vireo Survey Routes in North Carolina

Routes recording Red-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 →
Fontana5920251968
Arcola5620251971
Bullock4720251997
Sturgills4420252001
Table Rock4320221994
Andrews4219981994
Jackson4020171995
Linville3820251976
N. Mills Riv3819951994
California3620131972
Youngsville3520251966
Rheasville3520172005
Murphy3320241996
Osmond3320252001
Highlands3320251994
Uwharrie Nf3120011993
Brevard3020251968
Durham2920251990
Waterville2820251994
Gupton2720252001
Cullowhee2620251974
Biscoe2620251990
Jonas Ridge2419711968
Marshall2320251990
Dortches2320251990

Red-eyed Vireo Population Trend in Other States

alabamaalaskaarkansascoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-mexiconew-yorknorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawashingtonwest-virginiawisconsinwyoming

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