Guild · Indiana · BBS 2025 Release · 1966–2024
Grassland Birds In Indiana
14 species in this guild. As a group they are -74% since 1968.
Guild Signals
guild collapsecomputed index
Grassland birds as a group have fallen sharply in Indiana, down 74% since 1968.
Forecast
If the recent trend holds, Grassland birds in Indiana is projected to fall about 40% by 2029 — from 2.8 in 2024 to a central estimate of 1.7 (95% range 0.00–3.8). A 5-year backtest shows a typical error of ±22.3%, with 100% of held-out values landing inside the 95% band.
-40%Change by 2029
1.7Projected 2029 index
0.00–3.895% range
±22.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 2.2 | 0.09 | 4.3 |
| 2026 | 2.0 | 0.00 | 4.1 |
| 2027 | 1.9 | 0.00 | 4.0 |
| 2028 | 1.8 | 0.00 | 3.9 |
| 2029 | 1.7 | 0.00 | 3.8 |
Member Species In Indiana
| Western Meadowlark | Icteridae | -98% |
| Grasshopper Sparrow | Passerellidae | -95% |
| Bobolink | Icteridae | -95% |
| Ring-necked Pheasant | Phasianidae | -91% |
| Vesper Sparrow | Passerellidae | -88% |
| Northern Bobwhite | Odontophoridae | -87% |
| Savannah Sparrow | Passerellidae | -77% |
| Henslow's Sparrow | Passerellidae | -73% |
| Eastern Meadowlark | Icteridae | -71% |
| Sedge Wren | Troglodytidae | -71% |
| Upland Sandpiper | Scolopacidae | -65% |
| Dickcissel | Cardinalidae | -56% |
| Lark Sparrow | Passerellidae | -38% |
| Horned Lark | Alaudidae | -35% |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.