Guild · Idaho · BBS 2025 Release · 1966–2024
Forest Birds In Idaho
46 species in this guild. As a group they are -58% since 1970.
Guild Signals
guild collapsecomputed index
Forest birds as a group have fallen sharply in Idaho, down 58% since 1970.
Forecast
If the recent trend holds, Forest birds in Idaho is projected to fall about 24% by 2029 — from 2.1 in 2024 to a central estimate of 1.6 (95% range 0.00–4.0). A 5-year backtest shows a typical error of ±43.3%, with 100% of held-out values landing inside the 95% band.
-24%Change by 2029
1.6Projected 2029 index
0.00–4.095% range
±43.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 1.7 | 0.00 | 4.1 |
| 2026 | 1.7 | 0.00 | 4.0 |
| 2027 | 1.6 | 0.00 | 4.0 |
| 2028 | 1.6 | 0.00 | 4.0 |
| 2029 | 1.6 | 0.00 | 4.0 |
Member Species In Idaho
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.