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

Warbling Vireo In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastForest birds

Warbling Vireo in New England / Mid-Atlantic Coast has surged: up 263% on the route-weighted index since 1968.

+263%Since 1968
96Routes In Region
58Years

Notable Signals

long arc increasecomputed index

Warbling Vireo has surged in New England / Mid-Atlantic Coast: up 263% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Warbling Vireo in New England / Mid-Atlantic Coast is projected to rise about 51% by 2029 — from 1.0 in 2024 to a central estimate of 1.6 (95% range 1.1–2.0). A 5-year backtest shows a typical error of ±17.8%, with 80% of held-out values landing inside the 95% band.

+51%Change by 2029
1.6Projected 2029 index
1.1–2.095% range
±17.8%Backtest error
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 index95% low95% high
20251.51.11.9
20261.51.11.9
20271.51.11.9
20281.51.11.9
20291.61.12.0

Routes In New England / Mid-Atlantic Coast

Routes recording Warbling Vireo in New England / Mid-Atlantic Coast.
E HartlandCONNECTICUT131992
Long HillCONNECTICUT112019
WillimanticCONNECTICUT92018
Warren 2MASSACHUSETTS92024
N. AndoverMASSACHUSETTS82024
BelchertownMASSACHUSETTS72024
ShermanCONNECTICUT62019
Mid HaddamCONNECTICUT62024
Woodstock 2CONNECTICUT62024
MaynardMASSACHUSETTS62022
E PepperellMASSACHUSETTS61994
PurdyNEW-YORK62022
GreenwichCONNECTICUT52018
GranbyCONNECTICUT52024
Fair HillMARYLAND51996
WarrenMASSACHUSETTS52009
ShannockRHODE-ISLAND52024
SouthingtonCONNECTICUT42024
StraffordNEW-HAMPSHIRE42024
HuntingtonNEW-YORK42023
BedfordNEW-YORK41996
Casimir Pulaski SfRHODE-ISLAND42018
UncasvilleCONNECTICUT32024
MiltonDELAWARE31972
BerlinMARYLAND32005

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