BirdAnalyst
Species · BCR 30 · BBS 2025 Release · 1966–2024

Red-eyed Vireo In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastForest birds

Red-eyed Vireo in New England / Mid-Atlantic Coast has risen sharply: up 53% on the route-weighted index since 1968.

+53%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 →
163Routes 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 →

Red-eyed Vireo has risen sharply in New England / Mid-Atlantic Coast: up 53% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Red-eyed Vireo in New England / Mid-Atlantic Coast is projected to stay roughly flat through 2029, near 19 (95% range 15–23). A 5-year backtest shows a typical error of ±11.3%, with 100% of held-out values landing inside the 95% band.

-6%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 →
19Projected 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 →
15–2395% 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 →
±11.3%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 New England / Mid-Atlantic Coast is projected to stay roughly flat through 2029, near 19 (95% range 15–23). A 5-year backtest shows a typical error of ±11.3%, 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 →
2025181522
2026191522
2027191523
2028191523
2029191523

Routes In New England / Mid-Atlantic Coast

Routes recording Red-eyed Vireo in New England / Mid-Atlantic Coast.
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 →
WarrenCONNECTICUT1282011
Quonset PtRHODE-ISLAND822024
Woodstock 2CONNECTICUT772024
Island CreekMARYLAND772024
StraffordNEW-HAMPSHIRE762024
Casimir Pulaski SfRHODE-ISLAND712018
Port RoyalVIRGINIA622019
BrandonVIRGINIA622024
BelchertownMASSACHUSETTS602024
ShannockRHODE-ISLAND582024
Milton 2DELAWARE562017
HughesvilleMARYLAND542024
Ware RiverMASSACHUSETTS542022
Warren 2CONNECTICUT512024
La PlataMARYLAND492009
Warren 2MASSACHUSETTS482024
SinepuxentMARYLAND431978
S BarreMASSACHUSETTS432024
WoodstockCONNECTICUT402007
Forest GroveMARYLAND392023
QuinbyVIRGINIA392024
WalkersVIRGINIA382023
PomonkeyMARYLAND342024
PomfretMARYLAND342024
DavidsnvilleMARYLAND332024

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