BirdAnalyst
Species · Missouri · BBS 2025 Release · 1966–2024

Common Grackle Population Trend in Missouri

All statesGeneralists

Common Grackle in Missouri has collapsed: down 83% on the route-weighted index since 1969.

-83%Since 1969
93Routes In State
57Years

Notable Common Grackle Trends in Missouri

long arc declinecomputed index

Common Grackle has collapsed in Missouri: down 83% on the route-weighted index since 1969.

Common Grackle Population Forecast in Missouri

If the recent trend holds, Common Grackle in Missouri is projected to fall about 84% by 2029 — from 8.5 in 2024 to a central estimate of 1.3 (95% range 0.00–14). A 5-year backtest shows a typical error of ±24.5%, with 100% of held-out values landing inside the 95% band.

-84%Change by 2029
1.3Projected 2029 index
0.00–1495% range
±24.5%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
20256.20.0019
20265.00.0018
20273.80.0017
20282.60.0016
20291.30.0014

Common Grackle Survey Routes in Missouri

Routes recording Common Grackle in Missouri.
Hayti16820212016
Sni Mills14619901967
Cole Camp9019901971
Blodgett7520242013
Washington6219771967
Stet5519951972
Hamilton4519851972
Cassville3920241967
Deventer3720241967
Kahoka3619981967
Norborne3520232006
New Point2820241994
Gildehouse2819891978
Cameron2620231986
Centertown2520241973
Mcfall2220241994
Kennett2220242015
Frazier2120241967
Kirksville2120241994
Lucerne2020212016
Emden1920242017
Kahoka21720242002
Mincy1620242014
Ironton1519801972
Sedalia1420241991

Common Grackle Population Trend in Other States

alabamaarkansascoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawest-virginiawisconsinwyoming

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