BirdAnalyst
Species · BCR 37 · BBS 2025 Release · 1966–2024

Common Grackle In Gulf Coastal Prairie

All regionsGulf Coastal PrairieGeneralists

Common Grackle in Gulf Coastal Prairie has declined: down 30% on the route-weighted index since 1969.

-30%Since 1969
40Routes In Region
57Years

Notable Signals

No notable trend signals for Common Grackle in Gulf Coastal Prairie. See the full index history below.

Forecast

If the recent trend holds, Common Grackle in Gulf Coastal Prairie is projected to rise about 138% by 2029 — from 15 in 2024 to a central estimate of 37 (95% range 7.5–66). A 5-year backtest shows a typical error of ±127.3%, with 80% of held-out values landing inside the 95% band.

+138%Change by 2029
37Projected 2029 index
7.5–6695% range
±127.3%Backtest error
19672029
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
2025366.665
2026366.865
2027367.065
2028367.266
2029377.566

Routes In Gulf Coastal Prairie

Routes recording Common Grackle in Gulf Coastal Prairie.
JuniorLOUISIANA2481991
WoodlawnLOUISIANA2382021
LafitteLOUISIANA1351991
EstherLOUISIANA622024
KatyTEXAS582024
ChinquapinTEXAS582024
CreoleLOUISIANA381987
VintonLOUISIANA312009
IndianolaTEXAS312024
Forked Island 2LOUISIANA282011
HackberryLOUISIANA212016
Rock IslandTEXAS212024
StowellTEXAS202022
Ville PlatteLOUISIANA192019
RichardLOUISIANA182024
Port AcresTEXAS182024
VanderbiltTEXAS171976
Oyster LakeTEXAS162024
Sabine NwrLOUISIANA112008
Forked IslandLOUISIANA112024
Ltl ChenierLOUISIANA102024
KaplanLOUISIANA92023
Gran ChenierLOUISIANA81981
MauriceLOUISIANA82024
GlencoeLOUISIANA72018

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