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

Great Blue Heron In Atlantic Northern Forest

All regionsAtlantic Northern ForestWetland birds

Great Blue Heron in Atlantic Northern Forest has increased: up 42% on the route-weighted index since 1968.

+42%Since 1968
135Routes In Region
58Years

Notable Signals

No notable trend signals for Great Blue Heron in Atlantic Northern Forest. See the full index history below.

Forecast

If the recent trend holds, Great Blue Heron in Atlantic Northern Forest is projected to fall about 12% by 2029 — from 0.40 in 2024 to a central estimate of 0.36 (95% range 0.12–0.59). A 5-year backtest shows a typical error of ±55.5%, with 100% of held-out values landing inside the 95% band.

-12%Change by 2029
0.36Projected 2029 index
0.12–0.5995% range
±55.5%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
20250.350.120.59
20260.350.120.59
20270.350.120.59
20280.350.120.59
20290.360.120.59

Routes In Atlantic Northern Forest

Routes recording Great Blue Heron in Atlantic Northern Forest.
Jefferson HlNEW-HAMPSHIRE71995
WanakenaNEW-YORK62024
SabattisNEW-YORK51983
GabrielsNEW-YORK42018
Brownfield 2MAINE32017
LempsterNEW-HAMPSHIRE32022
St Regis FlsNEW-YORK32016
S ReadingVERMONT32019
FletcherVERMONT32024
WatervilleVERMONT31979
GreenwoodMAINE22021
East TroyMAINE22019
HarmonyMAINE22017
HancockMAINE22024
DebloisMAINE22007
CarrabassettMAINE22007
Seboomook LkMAINE21999
CambridgeMAINE22010
WytopitlockMAINE21982
MedwayMAINE22016
Pillsbury PdMAINE21968
Horse MtnMAINE21990
AshlandMAINE21999
St DavidMAINE21992
RomeMAINE22024

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