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

Black-crowned Night Heron In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastWetland birds

Black-crowned Night Heron in New England / Mid-Atlantic Coast has fallen sharply: down 74% on the route-weighted index since 1968.

-74%Since 1968
61Routes In Region
57Years

Notable Signals

long arc declinecomputed index

Black-crowned Night Heron has fallen sharply in New England / Mid-Atlantic Coast: down 74% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Black-crowned Night Heron in New England / Mid-Atlantic Coast is projected to stay roughly flat through 2028, near 0.04 (95% range 0.00–0.18). A 5-year backtest shows a typical error of ±83.9%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2028
0.04Projected 2028 index
0.00–0.1895% range
±83.9%Backtest error
19662028
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
20240.050.000.19
20250.050.000.19
20260.040.000.19
20270.040.000.18
20280.040.000.18

Routes In New England / Mid-Atlantic Coast

Routes recording Black-crowned Night Heron in New England / Mid-Atlantic Coast.
SpraguetownNEW-JERSEY51997
Chincoteag WVIRGINIA42003
DoverDELAWARE31968
Holleyville 2DELAWARE32019
SinepuxentMARYLAND31977
E DennisMASSACHUSETTS32021
MaynardMASSACHUSETTS31973
Ocean CityNEW-JERSEY32019
VillasNEW-JERSEY31981
QuinbyVIRGINIA31988
WestbrookCONNECTICUT22015
HarringtonDELAWARE22003
ElktonMARYLAND21996
FruitlandMARYLAND21983
NewarkMARYLAND21976
WalnutMARYLAND22019
MarionMASSACHUSETTS21980
WarrenMASSACHUSETTS21970
StraffordNEW-HAMPSHIRE21970
DeepwaterNEW-JERSEY21971
AncoraNEW-JERSEY21970
Cape May ChNEW-JERSEY22011
BedfordNEW-YORK21982
Quonset PtRHODE-ISLAND21991
MysticCONNECTICUT12013

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