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

Common Grackle In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastGeneralists

Common Grackle in New England / Mid-Atlantic Coast has fallen sharply: down 74% on the route-weighted index since 1968.

-74%Since 1968
164Routes In Region
58Years

Notable Signals

long arc declinecomputed index

Common Grackle has fallen sharply in New England / Mid-Atlantic Coast: down 74% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Common Grackle in New England / Mid-Atlantic Coast is projected to stay roughly flat through 2029, near 35 (95% range 8.5–62). A 5-year backtest shows a typical error of ±57.1%, with 100% of held-out values landing inside the 95% band.

-1%Change by 2029
35Projected 2029 index
8.5–6295% range
±57.1%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
2025411468
2026401366
2027381165
20283710.063
2029358.562

Routes In New England / Mid-Atlantic Coast

Routes recording Common Grackle in New England / Mid-Atlantic Coast.
ClarksvilleNEW-JERSEY5291991
PedricktownNEW-JERSEY2692012
HarmonyMARYLAND2642017
HolmansvilleNEW-JERSEY2582009
MatthewsMARYLAND2572024
Lowes XrdsDELAWARE2381991
HolleyvilleDELAWARE2042004
DoverDELAWARE2001987
FruitlandMARYLAND1811998
FrankfordDELAWARE1642012
SinepuxentMARYLAND1601978
MasonvilleNEW-JERSEY1501970
Milton 2DELAWARE1492017
CokesburyMARYLAND1492024
Tall TimbersMARYLAND1452014
Snow HillMARYLAND1421976
MillsboroDELAWARE1392024
HarringtonDELAWARE1262024
MiltonDELAWARE1242016
HauppaugeNEW-YORK1222018
DeepwaterNEW-JERSEY1161977
MelitotaMARYLAND1112024
Broomes IslMARYLAND1041996
Piney NeckMARYLAND1002024
Grove NeckMARYLAND1001996

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