Guild
Grassland Birds
29 species tracked. As a group, grassland birds are -52% since 1968.
Guild Signals
guild collapsecomputed index
Grassland birds as a group have fallen sharply in surveyed states, down 52% since 1968.
Forecast
If the recent trend holds, Grassland birds as a group is projected to fall about 31% by 2029 — from 2.2 in 2024 to a central estimate of 1.5 (95% range 1.0–2.0). A 5-year backtest shows a typical error of ±15.6%, with 80% of held-out values landing inside the 95% band.
-31%Change by 2029
1.5Projected 2029 index
1.0–2.095% range
±15.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 1.7 | 1.2 | 2.2 |
| 2026 | 1.7 | 1.2 | 2.1 |
| 2027 | 1.6 | 1.1 | 2.1 |
| 2028 | 1.6 | 1.1 | 2.1 |
| 2029 | 1.5 | 1.0 | 2.0 |
Grassland Birds By State
| Georgia | -92% | 5 |
| South Carolina | -91% | 5 |
| New Jersey | -91% | 6 |
| Connecticut | -86% | 3 |
| North Carolina | -85% | 7 |
| Alabama | -85% | 6 |
| Louisiana | -84% | 5 |
| West Virginia | -83% | 7 |
| Wisconsin | -81% | 15 |
| Michigan | -80% | 14 |
| Tennessee | -79% | 6 |
| Kentucky | -76% | 9 |
| Mississippi | -73% | 6 |
| California | -73% | 7 |
| Maryland | -73% | 8 |
| Pennsylvania | -72% | 8 |
| Arizona | -69% | 9 |
| Iowa | -67% | 13 |
| Indiana | -67% | 13 |
| Colorado | -67% | 15 |
| Illinois | -66% | 13 |
| Maine | -66% | 6 |
| Virginia | -65% | 8 |
| Ohio | -65% | 12 |
| Vermont | -64% | 6 |
| Wyoming | -56% | 16 |
| New York | -55% | 9 |
| Minnesota | -53% | 15 |
| Missouri | -52% | 12 |
| New Hampshire | -52% | 4 |
| North Dakota | -48% | 18 |
| Texas | -47% | 12 |
| Arkansas | -47% | 6 |
| Massachusetts | -46% | 4 |
| South Dakota | -44% | 17 |
| New Mexico | -43% | 11 |
| Idaho | -36% | 9 |
| Kansas | -32% | 14 |
| Nebraska | -26% | 16 |
| Oregon | -23% | 8 |
| Nevada | -22% | 7 |
| Washington | -21% | 8 |
| Montana | -13% | 16 |
| Alaska | +3% | 9 |
| Delaware | +4% | 4 |
| Utah | +5% | 9 |
| Oklahoma | +21% | 11 |
Member Species
| Henslow's Sparrow | Passerellidae | -82% | 1968 |
| Eastern Meadowlark | Icteridae | -81% | 1968 |
| Loggerhead Shrike | Laniidae | -74% | 1968 |
| Eastern Yellow Wagtail | Motacillidae | -71% | 1994 |
| Baird's Sparrow | Passerellidae | -71% | 1969 |
| Lark Bunting | Passerellidae | -70% | 1969 |
| Bobolink | Icteridae | -70% | 1968 |
| Chestnut-collared Longspur | Calcariidae | -68% | 1969 |
| Grasshopper Sparrow | Passerellidae | -52% | 1968 |
| Savannah Sparrow | Passerellidae | -51% | 1968 |
| LeConte's Sparrow | Passerellidae | -45% | 1969 |
| Sprague's Pipit | Motacillidae | -30% | 1969 |
| Dickcissel | Cardinalidae | -22% | 1968 |
| Sedge Wren | Troglodytidae | -19% | 1968 |
| Northern Shrike | Laniidae | +1% | 1985 |
| Vesper Sparrow | Passerellidae | +2% | 1968 |
| Lapland Longspur | Calcariidae | +3% | 1984 |
| Western Meadowlark | Icteridae | +10% | 1968 |
| Clay-colored Sparrow | Passerellidae | +17% | 1968 |
| Upland Sandpiper | Scolopacidae | +22% | 1968 |
| Lark Sparrow | Passerellidae | +42% | 1968 |
| Cassin's Sparrow | Passerellidae | +61% | 1969 |
| Horned Lark | Alaudidae | +62% | 1968 |
| Chihuahuan Meadowlark | Icteridae | +160% | 1969 |
| Botteri's Sparrow | Passerellidae | +317% | 1971 |
| Snow Bunting | Calcariidae | +639% | 1986 |
| Thick-billed Longspur | Calcariidae | 15× | 1969 |
| Smith's Longspur | Calcariidae | 19× | 1997 |
| American Pipit | Motacillidae | 20× | 1976 |