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

Worm-eating Warbler In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastForest birds

Worm-eating Warbler in New England / Mid-Atlantic Coast has surged: up 547% on the route-weighted index since 1968.

+547%Since 1968
97Routes In Region
58Years

Notable Signals

long arc increasecomputed index

Worm-eating Warbler has surged in New England / Mid-Atlantic Coast: up 547% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Worm-eating Warbler in New England / Mid-Atlantic Coast is projected to fall about 23% by 2029 — from 0.90 in 2024 to a central estimate of 0.69 (95% range 0.43–0.95). A 5-year backtest shows a typical error of ±29.8%, with 40% of held-out values landing inside the 95% band.

-23%Change by 2029
0.69Projected 2029 index
0.43–0.9595% range
±29.8%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
20250.650.390.91
20260.660.400.92
20270.670.410.93
20280.680.420.94
20290.690.430.95

Routes In New England / Mid-Atlantic Coast

Routes recording Worm-eating Warbler in New England / Mid-Atlantic Coast.
BerlinMARYLAND102024
Furnace TownMARYLAND92024
UncasvilleCONNECTICUT72024
WillimanticCONNECTICUT52018
MadisonMARYLAND52024
CokesburyMARYLAND52024
Pepperbox 2DELAWARE42024
Island CreekMARYLAND42024
WalnutMARYLAND42024
TruhartVIRGINIA42024
WestbrookCONNECTICUT32024
PepperboxDELAWARE32016
IndiantownMARYLAND32014
Warren 2MASSACHUSETTS32010
GreenwichNEW-JERSEY32013
WinslowNEW-JERSEY32007
MysticCONNECTICUT22014
DanburyCONNECTICUT22023
Long HillCONNECTICUT22019
Woodstock 2CONNECTICUT22024
HarringtonDELAWARE22016
MillsboroDELAWARE22024
Holleyville 2DELAWARE22015
Snow HillMARYLAND21976
DavidsnvilleMARYLAND22021

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