Guild · Nevada · BBS 2025 Release · 1966–2024
Arid-land Birds In Nevada
8 species in this guild. As a group they are -60% since 1970.
Guild Signals
guild collapsecomputed index
Arid-land birds as a group have fallen sharply in Nevada, down 60% since 1970.
Forecast
If the recent trend holds, Arid-land birds in Nevada is projected to fall about 90% by 2029 — from 2.7 in 2024 to a central estimate of 0.27 (95% range 0.00–9.4). A 5-year backtest shows a typical error of ±73.3%, with 100% of held-out values landing inside the 95% band.
-90%Change by 2029
0.27Projected 2029 index
0.00–9.495% range
±73.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.78 | 0.00 | 9.9 |
| 2026 | 0.65 | 0.00 | 9.8 |
| 2027 | 0.53 | 0.00 | 9.7 |
| 2028 | 0.40 | 0.00 | 9.6 |
| 2029 | 0.27 | 0.00 | 9.4 |
Member Species In Nevada
| Black-tailed Gnatcatcher | Polioptilidae | -74% |
| Cactus Wren | Troglodytidae | -72% |
| Black-throated Sparrow | Passerellidae | -54% |
| Greater Roadrunner | Cuculidae | -7% |
| Verdin | Remizidae | +127% |
| Phainopepla | Ptiliogonatidae | +354% |
| Gambel's Quail | Odontophoridae | +662% |
| Lucy's Warbler | Parulidae | +923% |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.