BirdAnalyst
Species · BCR 14 · BBS 2025 Release · 1966–2024

Cape May Warbler In Atlantic Northern Forest

All regionsAtlantic Northern ForestForest birds

Cape May Warbler in Atlantic Northern Forest has fallen sharply: down 54% on the route-weighted index since 1969.

-54%Since 1969
84Routes In Region
55Years

Notable Signals

long arc declinecomputed index

Cape May Warbler has fallen sharply in Atlantic Northern Forest: down 54% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Cape May Warbler in Atlantic Northern Forest is projected to stay roughly flat through 2028, near 0.08 (95% range 0.00–0.26). A 5-year backtest shows a typical error of ±89.3%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2028
0.08Projected 2028 index
0.00–0.2695% range
±89.3%Backtest error
19672028
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
20240.090.000.27
20250.080.000.27
20260.080.000.27
20270.080.000.27
20280.080.000.26

Routes In Atlantic Northern Forest

Routes recording Cape May Warbler in Atlantic Northern Forest.
Pillsbury PdMAINE81968
BaxterMAINE61984
NorthfieldMAINE41981
Clayton LakeMAINE42008
Otisfield GrMAINE31975
Seboomook LkMAINE32006
GreenvilleMAINE32022
BenedictaMAINE32022
Grnd Lk StrmMAINE31993
Baker LakeMAINE32009
Heron LakeMAINE32003
FreedomMAINE22006
EastbrookMAINE21981
AuroraMAINE21994
Carrying PlMAINE22005
WinnMAINE21998
LudlowMAINE21998
Horse MtnMAINE21994
TelosMAINE21995
RomeMAINE22001
Clayton Lake 2MAINE22013
CornvilleMAINE22019
MilanNEW-HAMPSHIRE21997
ClarksvilleNEW-HAMPSHIRE22023
Horseshoe L.NEW-YORK22013

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