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

American Bittern In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastWetland birds

American Bittern in New England / Mid-Atlantic Coast has collapsed: down 84% on the route-weighted index since 1968.

-84%Since 1968
34Routes In Region
42Years

Notable Signals

long arc declinecomputed index

American Bittern has collapsed in New England / Mid-Atlantic Coast: down 84% on the route-weighted index since 1968.

Forecast

If the recent trend holds, American Bittern in New England / Mid-Atlantic Coast is projected to stay roughly flat through 2026, near 0.00 (95% range 0.00–0.04). A 5-year backtest shows a typical error of ±228.8%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2026
0.00Projected 2026 index
0.00–0.0495% range
±228.8%Backtest error
19662026
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
20220.000.000.04
20230.000.000.04
20240.000.000.04
20250.000.000.04
20260.000.000.04

Routes In New England / Mid-Atlantic Coast

Routes recording American Bittern in New England / Mid-Atlantic Coast.
AlbionNEW-JERSEY21966
WesthamptonNEW-YORK21993
HuntingtonNEW-YORK21981
WoodstockCONNECTICUT12004
WarrenCONNECTICUT12011
Mid HaddamCONNECTICUT11990
WilmingtonDELAWARE11970
HarringtonDELAWARE11967
Lowes XrdsDELAWARE11970
BlackbirdDELAWARE11997
Kittery PtMAINE12021
Tall TimbersMARYLAND11978
HongaMARYLAND12006
MadisonMARYLAND12008
ViennaMARYLAND11973
E DennisMASSACHUSETTS11974
PrattvilleMASSACHUSETTS11972
NewburyportMASSACHUSETTS12008
MaynardMASSACHUSETTS11996
E PepperellMASSACHUSETTS11989
Warren 2MASSACHUSETTS12017
Ware RiverMASSACHUSETTS11994
BrentwoodNEW-HAMPSHIRE11981
DoverNEW-HAMPSHIRE11986
EpsomNEW-HAMPSHIRE11992

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