BirdAnalyst
Species · BCR 28 · BBS 2025 Release · 1966–2024

Common Grackle In Appalachian Mountains

All regionsAppalachian MountainsGeneralists

Common Grackle in Appalachian Mountains has collapsed: down 82% on the route-weighted index since 1968.

-82%Since 1968
394Routes In Region
58Years

Notable Signals

long arc declinecomputed index

Common Grackle has collapsed in Appalachian Mountains: down 82% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Common Grackle in Appalachian Mountains is projected to fall about 96% by 2029 — from 17 in 2024 to a central estimate of 0.63 (95% range 0.00–18). A 5-year backtest shows a typical error of ±69.2%, with 100% of held-out values landing inside the 95% band.

-96%Change by 2029
0.63Projected 2029 index
0.00–1895% range
±69.2%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
20255.60.0023
20264.40.0022
20273.10.0021
20281.90.0020
20290.630.0018

Routes In Appalachian Mountains

Routes recording Common Grackle in Appalachian Mountains.
ArleeWEST-VIRGINIA3211979
ScheafferstnPENNSYLVANIA3012001
WilliamsportMARYLAND2422024
BrunnervillePENNSYLVANIA1882009
NewbernVIRGINIA1801982
RectorPENNSYLVANIA1431977
DoylesburgPENNSYLVANIA1332023
Big FlatPENNSYLVANIA1261981
Drehersville 2PENNSYLVANIA1232024
CarsonvillePENNSYLVANIA1202023
DrehersvillePENNSYLVANIA1171999
ParadiseWEST-VIRGINIA1152023
RydePENNSYLVANIA1122005
WilliamsburgPENNSYLVANIA1112024
Brunnerville 2PENNSYLVANIA1092024
Natural BridVIRGINIA1062024
Schaefferstown 2PENNSYLVANIA1052024
Peters MtPENNSYLVANIA961994
BirminghamALABAMA871995
DawsonALABAMA851998
IvanhoeVIRGINIA811968
SardisPENNSYLVANIA801974
JeromeVIRGINIA782023
Kehoe 2KENTUCKY772024
RidgwayPENNSYLVANIA762018

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