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

Common Grackle In Atlantic Northern Forest

All regionsAtlantic Northern ForestGeneralists

Common Grackle in Atlantic Northern Forest has fallen sharply: down 59% on the route-weighted index since 1968.

-59%Since 1968
154Routes In Region
58Years

Notable Signals

long arc declinecomputed index

Common Grackle has fallen sharply in Atlantic Northern Forest: down 59% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Common Grackle in Atlantic Northern Forest is projected to fall about 64% by 2029 — from 7.5 in 2024 to a central estimate of 2.7 (95% range 0.00–6.9). A 5-year backtest shows a typical error of ±26.4%, with 100% of held-out values landing inside the 95% band.

-64%Change by 2029
2.7Projected 2029 index
0.00–6.995% range
±26.4%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
20253.80.007.9
20263.50.007.7
20273.20.007.4
20283.00.007.1
20292.70.006.9

Routes In Atlantic Northern Forest

Routes recording Common Grackle in Atlantic Northern Forest.
WashburnMAINE452005
CheshireMASSACHUSETTS421994
St DavidMAINE332005
WarrenMAINE321990
HighmarketNEW-YORK302024
WatervilleVERMONT301980
BoundaryMAINE282016
WestbrookMAINE262024
HardwickVERMONT232024
RomeMAINE212024
Ft FairfieldMAINE202005
New HartfordCONNECTICUT181987
East HavenVERMONT182024
GreensboroVERMONT182024
Grnd Lk StrmMAINE172000
ConcordNEW-HAMPSHIRE172024
WalpoleNEW-HAMPSHIRE172024
New HartfordCONNECTICUT162024
Otisfield GrMAINE162015
ChesterfieldMASSACHUSETTS162024
HartfordMAINE152023
CanterburyNEW-HAMPSHIRE152024
KasoagNEW-YORK152024
BentonMAINE141980
MilanNEW-HAMPSHIRE142024

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