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

Blackburnian Warbler In Atlantic Northern Forest

All regionsAtlantic Northern ForestForest birds

Blackburnian Warbler in Atlantic Northern Forest has surged: up 118% on the route-weighted index since 1968.

+118%Since 1968
153Routes In Region
58Years

Notable Signals

long arc increasecomputed index

Blackburnian Warbler has surged in Atlantic Northern Forest: up 118% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Blackburnian Warbler in Atlantic Northern Forest is projected to rise about 30% by 2029 — from 3.0 in 2024 to a central estimate of 3.9 (95% range 2.5–5.2). A 5-year backtest shows a typical error of ±32.3%, with 100% of held-out values landing inside the 95% band.

+30%Change by 2029
3.9Projected 2029 index
2.5–5.295% range
±32.3%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
20253.72.45.1
20263.82.45.1
20273.82.45.2
20283.82.45.2
20293.92.55.2

Routes In Atlantic Northern Forest

Routes recording Blackburnian Warbler in Atlantic Northern Forest.
NorthfieldMAINE361981
WaiteMAINE281977
InletNEW-YORK282017
PittsfieldMASSACHUSETTS142016
SabattisNEW-YORK131983
Dixville Notch 2NEW-HAMPSHIRE122024
Old Forge 2NEW-YORK122019
St Regis FlsNEW-YORK112017
Pillsbury PdMAINE101968
ClarksvilleNEW-HAMPSHIRE102024
PetersburgNEW-YORK102013
Blue Ridge SNEW-YORK102010
StrattonVERMONT102024
Carrying PlMAINE92024
CummingtonMASSACHUSETTS92014
Dixvil NotchNEW-HAMPSHIRE92017
East CalaisVERMONT92024
Horse MtnMAINE82011
FranconiaNEW-HAMPSHIRE82024
East HavenVERMONT82024
ChesterfieldMASSACHUSETTS72024
GlenNEW-HAMPSHIRE72024
HighmarketNEW-YORK72024
StoweVERMONT72024
Wilson MillsMAINE62024

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