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

Herring Gull In Atlantic Northern Forest

All regionsAtlantic Northern ForestWetland birds

Herring Gull in Atlantic Northern Forest has collapsed: down 95% on the route-weighted index since 1968.

-95%Since 1968
66Routes In Region
56Years

Notable Signals

long arc declinecomputed index

Herring Gull has collapsed in Atlantic Northern Forest: down 95% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Herring Gull in Atlantic Northern Forest is projected to stay roughly flat through 2029, near 0.00 (95% range 0.00–1.7). A 5-year backtest shows a typical error of ±733.7%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.00Projected 2029 index
0.00–1.795% range
±733.7%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
20250.000.001.7
20260.000.001.7
20270.000.001.7
20280.000.001.7
20290.000.001.7

Routes In Atlantic Northern Forest

Routes recording Herring Gull in Atlantic Northern Forest.
Moose RiverMAINE282008
BiddefordMAINE82006
JeffersonMAINE82010
DebloisMAINE52007
GreenvilleMAINE41999
Old Forge 2NEW-YORK42017
Seboomook LkMAINE32014
Jefferson HlNEW-HAMPSHIRE31990
Old ForgeNEW-YORK32006
NewcastleMAINE22024
BethelMAINE21989
TurnerMAINE22010
HartfordMAINE21982
BrooksMAINE22016
HancockMAINE22011
CooperMAINE22005
SpeculatorNEW-YORK21984
InletNEW-YORK22017
Post MillsVERMONT21998
New HartfordCONNECTICUT11982
WestbrookMAINE12010
Wilson MillsMAINE12024
GreenwoodMAINE11999
South ArmMAINE11979
Otisfield GrMAINE12012

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