Species · Mississippi · BBS 2025 Release · 1966–2024
Common Grackle Population Trend in Mississippi
Common Grackle in Mississippi has collapsed: down 91% on the route-weighted index since 1968.
-91%Since 1968
68Routes In State
58Years
Notable Common Grackle Trends in Mississippi
long arc declinecomputed index
Common Grackle has collapsed in Mississippi: down 91% on the route-weighted index since 1968.
Common Grackle Population Forecast in Mississippi
If the recent trend holds, Common Grackle in Mississippi is projected to fall about 100% by 2029 — from 6.9 in 2024 to a central estimate of 0.00 (95% range 0.00–20). A 5-year backtest shows a typical error of ±255.4%, with 80% of held-out values landing inside the 95% band.
-100%Change by 2029
0.00Projected 2029 index
0.00–2095% range
±255.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 20 |
| 2026 | 0.00 | 0.00 | 20 |
| 2027 | 0.00 | 0.00 | 20 |
| 2028 | 0.00 | 0.00 | 20 |
| 2029 | 0.00 | 0.00 | 20 |
Common Grackle Survey Routes in Mississippi
| Commerce | 65 | 1993 | 1966 |
| Macon | 51 | 2024 | 1966 |
| Tchula | 49 | 1975 | 1970 |
| Walthall | 38 | 1987 | 1970 |
| Isola | 32 | 2022 | 1968 |
| Dahomey Nwr | 28 | 2024 | 2011 |
| Poplarville | 26 | 1978 | 1972 |
| Tchula 2 | 22 | 1994 | 1976 |
| Okatibbee L. | 21 | 2008 | 1995 |
| Cybur | 20 | 2019 | 1966 |
| Fontainbleau | 20 | 1978 | 1966 |
| Grenada Lake | 20 | 2019 | 1997 |
| Lake Mary | 19 | 1989 | 1974 |
| Winterville | 18 | 2011 | 2009 |
| Scooba | 17 | 1982 | 1967 |
| Eagle Lake | 17 | 2024 | 2012 |
| Duffee | 16 | 2008 | 1973 |
| Lucien | 14 | 2013 | 1967 |
| Olive Branch | 13 | 2001 | 1966 |
| Moon | 11 | 2021 | 1996 |
| Corinth | 10 | 2024 | 1972 |
| Cockrum | 9 | 2021 | 1966 |
| Leaf River | 9 | 2013 | 2013 |
| Tchula 3 | 9 | 2024 | 1995 |
| Latimer 2 | 8 | 2022 | 2022 |
Common Grackle Population Trend in Other States
alabamaarkansascoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.