BirdAnalyst
Species · BCR 27 · BBS 2025 Release · 1966–2024

Common Grackle In Southeastern Coastal Plain

All regionsSoutheastern Coastal PlainGeneralists

Common Grackle in Southeastern Coastal Plain has collapsed: down 80% on the route-weighted index since 1968.

-80%Since 1968
337Routes In Region
58Years

Notable Signals

long arc declinecomputed index

Common Grackle has collapsed in Southeastern Coastal Plain: down 80% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Common Grackle in Southeastern Coastal Plain is projected to fall about 60% by 2029 — from 10 in 2024 to a central estimate of 4.1 (95% range 0.00–13). A 5-year backtest shows a typical error of ±17%, with 100% of held-out values landing inside the 95% band.

-60%Change by 2029
4.1Projected 2029 index
0.00–1395% range
±17%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
20257.80.0017
20266.90.0016
20276.00.0015
20285.00.0014
20294.10.0013

Routes In Southeastern Coastal Plain

Routes recording Common Grackle in Southeastern Coastal Plain.
Jarvisburg 2NORTH-CAROLINA6092022
BeargrassNORTH-CAROLINA3271981
Johns IsleSOUTH-CAROLINA2531979
Alabama PtALABAMA2322003
JarvisburgNORTH-CAROLINA2061999
FoleyALABAMA1591984
GrandyNORTH-CAROLINA1481975
BackbayVIRGINIA1341974
ShallotteNORTH-CAROLINA1321991
ElbertaALABAMA1112022
MashoesNORTH-CAROLINA1011982
Dauphin IsALABAMA811990
LovedaleFLORIDA812011
FairmontNORTH-CAROLINA781981
CornlandVIRGINIA782014
HertfordNORTH-CAROLINA712024
Ft Waltn BchFLORIDA662011
Boykin Ml PdSOUTH-CAROLINA651968
WeberGEORGIA622024
CaliforniaNORTH-CAROLINA612013
MattamuskeetNORTH-CAROLINA582021
St. ElmoALABAMA542021
SpeedNORTH-CAROLINA542024
MaconMISSISSIPPI512024
Santa RosaFLORIDA472003

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