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

Kentucky Warbler In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastForest birds

Kentucky Warbler in New England / Mid-Atlantic Coast has collapsed: down 80% on the route-weighted index since 1968.

-80%Since 1968
78Routes In Region
58Years

Notable Signals

long arc declinecomputed index

Kentucky Warbler has collapsed in New England / Mid-Atlantic Coast: down 80% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Kentucky Warbler in New England / Mid-Atlantic Coast is projected to fall about 12% by 2029 — from 0.13 in 2024 to a central estimate of 0.12 (95% range 0.00–0.34). A 5-year backtest shows a typical error of ±15%, with 100% of held-out values landing inside the 95% band.

-12%Change by 2029
0.12Projected 2029 index
0.00–0.3495% range
±15%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
20250.150.000.38
20260.140.000.37
20270.140.000.36
20280.130.000.35
20290.120.000.34

Routes In New England / Mid-Atlantic Coast

Routes recording Kentucky Warbler in New England / Mid-Atlantic Coast.
Pr FrederickMARYLAND62024
Pt RepublicMARYLAND51989
Snow HillMARYLAND41976
Bennett MillNEW-JERSEY41976
Broomes IslMARYLAND31991
EastonMARYLAND32021
SinepuxentMARYLAND31978
PomonkeyMARYLAND22021
MelitotaMARYLAND21996
HarmonyMARYLAND22017
ViennaMARYLAND22024
MardelaMARYLAND21982
NewarkMARYLAND22013
Forest GroveMARYLAND22023
JessupMARYLAND22015
DavidsnvilleMARYLAND22010
Grove NeckMARYLAND21995
White StoneVIRGINIA22003
Colonial PkyVIRGINIA21992
Cape CharlesVIRGINIA22011
Mt PleasantDELAWARE12007
WilmingtonDELAWARE12000
HarringtonDELAWARE12021
FredericaDELAWARE12005
DoverDELAWARE11979

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