Guild · South Dakota · BBS 2025 Release · 1966–2024
Grassland Birds In South Dakota
17 species in this guild. As a group they are -45% since 1969.
Guild Signals
guild collapsecomputed index
Grassland birds as a group have declined in South Dakota, down 45% since 1969.
Forecast
If the recent trend holds, Grassland birds in South Dakota is projected to fall about 39% by 2029 — from 21 in 2024 to a central estimate of 13 (95% range 5.3–21). A 5-year backtest shows a typical error of ±22.1%, with 80% of held-out values landing inside the 95% band.
-39%Change by 2029
13Projected 2029 index
5.3–2195% range
±22.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 14 | 6.5 | 22 |
| 2026 | 14 | 6.2 | 21 |
| 2027 | 14 | 5.9 | 21 |
| 2028 | 13 | 5.6 | 21 |
| 2029 | 13 | 5.3 | 21 |
Member Species In South Dakota
| Eastern Meadowlark | Icteridae | -92% |
| Lark Bunting | Passerellidae | -83% |
| Horned Lark | Alaudidae | -72% |
| Northern Bobwhite | Odontophoridae | -62% |
| Sprague's Pipit | Motacillidae | -58% |
| Dickcissel | Cardinalidae | -34% |
| Baird's Sparrow | Passerellidae | -29% |
| Western Meadowlark | Icteridae | -28% |
| Vesper Sparrow | Passerellidae | -25% |
| Savannah Sparrow | Passerellidae | -21% |
| Grasshopper Sparrow | Passerellidae | -13% |
| Ring-necked Pheasant | Phasianidae | -11% |
| Lark Sparrow | Passerellidae | +12% |
| Bobolink | Icteridae | +34% |
| Upland Sandpiper | Scolopacidae | +40% |
| Greater Prairie-Chicken | Phasianidae | +759% |
| Sedge Wren | Troglodytidae | 11× |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.