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Species · BCR 14 · BBS 2026 Release · 1966–2025

Blue-headed Vireo In Atlantic Northern Forest

All regionsAtlantic Northern ForestForest birds

Blue-headed Vireo in Atlantic Northern Forest has surged: up 281% on the route-weighted index since 1968.

+281%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 →
155Routes 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 →

Blue-headed Vireo has surged in Atlantic Northern Forest: up 281% on the route-weighted index since 1968.

Blue-headed Vireo In Atlantic Northern Forest Population Forecast

If the recent trend holds, Blue-headed Vireo in Atlantic Northern Forest is projected to rise about 97% by 2030 — from 2.7 in 2025 to a central estimate of 5.3 (95% range 3.2–7.5). A 5-year backtest shows a typical error of ±36%, with 80% of held-out values landing inside the 95% band.

+97%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 →
5.3Projected 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 →
3.2–7.595% 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 →
±36%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, Blue-headed Vireo in Atlantic Northern Forest is projected to rise about 97% by 2030 — from 2.7 in 2025 to a central estimate of 5.3 (95% range 3.2–7.5). A 5-year backtest shows a typical error of ±36%, with 80% 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 →
20265.23.07.3
20275.23.17.3
20285.33.17.4
20295.33.27.4
20305.33.27.5

Routes In Atlantic Northern Forest

Routes recording Blue-headed Vireo in Atlantic Northern Forest.
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 →
NorthfieldMAINE471981
Blue Ridge SNEW-YORK362010
InletNEW-YORK312017
NesowadnehunMAINE232021
Number FourNEW-YORK211998
SabattisNEW-YORK201983
Underwood 2NEW-YORK172009
NewcombNEW-YORK162022
Seboomook LkMAINE152014
CastineMAINE142006
Clayton LakeMAINE142008
Grnd Lk StrmMAINE132000
Baker Lake 2MAINE122011
Hope FallsNEW-YORK121995
Dixville Notch 2NEW-HAMPSHIRE112025
CooperMAINE102021
Forest StaMAINE102000
YankeetuladiMAINE102009
St Regis FlsNEW-YORK102017
Newbury 2VERMONT102023
Wilson MillsMAINE92025
ReedsMAINE92025
TelosMAINE92006
Baker LakeMAINE92009
TopsfieldMAINE91996

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