Guild · Arizona · BBS 2025 Release · 1966–2024
Forest Birds In Arizona
43 species in this guild. As a group they are +24% since 1970.
Guild Signals
No notable trend signals for forest birds in Arizona. See the full index history below.
Forecast
If the recent trend holds, Forest birds in Arizona is projected to rise about 35% by 2029 — from 1.1 in 2024 to a central estimate of 1.5 (95% range 0.65–2.4). A 5-year backtest shows a typical error of ±23.5%, with 100% of held-out values landing inside the 95% band.
+35%Change by 2029
1.5Projected 2029 index
0.65–2.495% range
±23.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 1.5 | 0.65 | 2.4 |
| 2026 | 1.5 | 0.65 | 2.4 |
| 2027 | 1.5 | 0.65 | 2.4 |
| 2028 | 1.5 | 0.65 | 2.4 |
| 2029 | 1.5 | 0.65 | 2.4 |
Member Species In Arizona
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.