Species · BCR 26 · BBS 2025 Release · 1966–2024
Mallard In Mississippi Alluvial Valley
Mallard in Mississippi Alluvial Valley has collapsed: down 89% on the route-weighted index since 1968.
-89%Since 1968
37Routes In Region
57Years
Notable Signals
long arc declinecomputed index
Mallard has collapsed in Mississippi Alluvial Valley: down 89% on the route-weighted index since 1968.
Forecast
If the recent trend holds, Mallard in Mississippi Alluvial Valley is projected to fall about 42% by 2029 — from 0.27 in 2024 to a central estimate of 0.16 (95% range 0.00–1.2). A 5-year backtest shows a typical error of ±82%, with 100% of held-out values landing inside the 95% band.
-42%Change by 2029
0.16Projected 2029 index
0.00–1.295% range
±82%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.23 | 0.00 | 1.2 |
| 2026 | 0.21 | 0.00 | 1.2 |
| 2027 | 0.19 | 0.00 | 1.2 |
| 2028 | 0.17 | 0.00 | 1.2 |
| 2029 | 0.16 | 0.00 | 1.2 |
Routes In Mississippi Alluvial Valley
| Commerce | MISSISSIPPI | 8 | 1988 |
| Mayflower | LOUISIANA | 7 | 1989 |
| Hughes | ARKANSAS | 6 | 2019 |
| Shaw | LOUISIANA | 6 | 1996 |
| Pawpaw | TENNESSEE | 6 | 2009 |
| Brousville | LOUISIANA | 5 | 2012 |
| Saffell | ARKANSAS | 4 | 2000 |
| Augusta 2 | ARKANSAS | 4 | 2011 |
| Pawpaw 2 | TENNESSEE | 4 | 2019 |
| Dell | ARKANSAS | 3 | 2024 |
| Ulm | ARKANSAS | 3 | 2012 |
| Isola | MISSISSIPPI | 3 | 2021 |
| Cp Girardeau | MISSOURI | 3 | 2019 |
| Hayti | MISSOURI | 3 | 2019 |
| South Bend | ARKANSAS | 2 | 2018 |
| Whitton | ARKANSAS | 2 | 1991 |
| Wilson | ARKANSAS | 2 | 2024 |
| Bardwell | KENTUCKY | 2 | 2000 |
| Bardwell 2 | KENTUCKY | 2 | 2007 |
| Roseland | LOUISIANA | 2 | 2008 |
| Floyd | LOUISIANA | 2 | 1991 |
| Transylvania | LOUISIANA | 2 | 2000 |
| River Road | LOUISIANA | 2 | 2017 |
| Baton Rouge | LOUISIANA | 2 | 2021 |
| Tallahatchie | MISSISSIPPI | 2 | 1996 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.