Guild · Louisiana · BBS 2025 Release · 1966–2024
Grassland Birds In Louisiana
5 species in this guild. As a group they are -88% since 1969.
Guild Signals
guild collapsecomputed index
Grassland birds as a group have collapsed in Louisiana, down 88% since 1969.
Forecast
If the recent trend holds, Grassland birds in Louisiana is projected to fall about 100% by 2029 — from 2.1 in 2024 to a central estimate of 0.00 (95% range 0.00–5.2). A 5-year backtest shows a typical error of ±150.4%, with 100% of held-out values landing inside the 95% band.
-100%Change by 2029
0.00Projected 2029 index
0.00–5.295% range
±150.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 5.2 |
| 2026 | 0.00 | 0.00 | 5.2 |
| 2027 | 0.00 | 0.00 | 5.2 |
| 2028 | 0.00 | 0.00 | 5.2 |
| 2029 | 0.00 | 0.00 | 5.2 |
Member Species In Louisiana
| Northern Bobwhite | Odontophoridae | -95% |
| Dickcissel | Cardinalidae | -81% |
| Eastern Meadowlark | Icteridae | -80% |
| Lark Sparrow | Passerellidae | -74% |
| Horned Lark | Alaudidae | -29% |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.