BirdAnalyst
Species · BCR 24 · BBS 2025 Release · 1966–2024

Common Grackle In Central Hardwoods

All regionsCentral HardwoodsGeneralists

Common Grackle in Central Hardwoods has collapsed: down 87% on the route-weighted index since 1968.

-87%Since 1968
160Routes In Region
58Years

Notable Signals

long arc declinecomputed index

Common Grackle has collapsed in Central Hardwoods: down 86% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Common Grackle in Central Hardwoods is projected to fall about 100% by 2029 — from 16 in 2024 to a central estimate of 0.00 (95% range 0.00–23). A 5-year backtest shows a typical error of ±84.1%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–2395% range
±84.1%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
20250.560.0023
20260.000.0023
20270.000.0023
20280.000.0023
20290.000.0023

Routes In Central Hardwoods

Routes recording Common Grackle in Central Hardwoods.
ShelbyvilleKENTUCKY2471978
MillionKENTUCKY1581986
Buena VistaKENTUCKY1372017
Cross PlainsINDIANA1362024
PlumKENTUCKY1192024
Sewell ShopKENTUCKY1182023
BoxvilleKENTUCKY1071983
Cole CampMISSOURI901990
GoshenKENTUCKY891999
Iron BridgeKENTUCKY871998
ScottsburgINDIANA782024
Million 2KENTUCKY772024
JohnsonvilleKENTUCKY742021
McbrayerKENTUCKY692024
LeveeKENTUCKY631982
Bays ForkKENTUCKY632019
NewberryINDIANA592024
EastviewKENTUCKY562024
HodgenvilleKENTUCKY522003
PleasurevillKENTUCKY492024
CyprssINDIANA472024
DixieKENTUCKY462019
East UnionKENTUCKY442022
MillersburgINDIANA412024
RomeOHIO412024

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