Guild
Arid-land Birds
24 species tracked. As a group, arid-land birds are +49%Guild trendA mean-index aggregate across the species in this group — the structural direction of the guild, with individual-species noise smoothed out.Full methodology → since 1969.
Guild SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →
No notable trend signals for arid-land birds. See the full index history below.
Arid-land Birds Population Forecast
If the recent trend holds, Arid-land birds as a group is projected to rise about 13% by 2030 — from 0.31 in 2025 to a central estimate of 0.35 (95% range 0.24–0.45). A 5-year backtest shows a typical error of ±26.7%, with 60% of held-out values landing inside the 95% band.
0.35Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
Arid-land Birds By State
| Guild trendA mean-index aggregate across the species in this group — the structural direction of the guild, with individual-species noise smoothed out.Full methodology → | ||
|---|---|---|
| Texas | -71% | 12 |
| Nevada | -55% | 14 |
| California | -43% | 20 |
| New Mexico | -34% | 16 |
| Colorado | -20% | 7 |
| Idaho | -16% | 4 |
| Arizona | -12% | 21 |
| Utah | +3% | 8 |
| Oregon | +14% | 5 |
| Wyoming | +63% | 3 |
| Washington | +114% | 3 |
| Oklahoma | +159% | 3 |