Species · Idaho · BBS 2025 Release · 1966–2024
Broad-tailed Hummingbird Population Trend in Idaho
Broad-tailed Hummingbird in Idaho has surged: up 612% on the route-weighted index since 1985.
+612%Since 1985
12Routes In State
38Years
Notable Broad-tailed Hummingbird Trends in Idaho
long arc increasecomputed index
Broad-tailed Hummingbird has surged in Idaho: up 612% on the route-weighted index since 1985.
Broad-tailed Hummingbird Population Forecast in Idaho
If the recent trend holds, Broad-tailed Hummingbird in Idaho is projected to fall about 38% by 2029 — from 0.76 in 2024 to a central estimate of 0.47 (95% range 0.22–0.72). A 5-year backtest shows a typical error of ±44.7%, with 20% of held-out values landing inside the 95% band.
-38%Change by 2029
0.47Projected 2029 index
0.22–0.7295% range
±44.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.43 | 0.18 | 0.68 |
| 2026 | 0.44 | 0.19 | 0.69 |
| 2027 | 0.45 | 0.20 | 0.70 |
| 2028 | 0.46 | 0.21 | 0.71 |
| 2029 | 0.47 | 0.22 | 0.72 |
Broad-tailed Hummingbird Survey Routes in Idaho
| Magic Mtn | 18 | 2024 | 1989 |
| Challis | 2 | 2022 | 2021 |
| Almo | 1 | 2017 | 1988 |
| Daniels Res | 1 | 2000 | 1988 |
| Silver City | 1 | 2002 | 1993 |
| Preston | 1 | 1988 | 1988 |
| Cape Horn | 1 | 1990 | 1990 |
| Squirrel | 1 | 2024 | 1998 |
| Centerville | 1 | 1985 | 1974 |
| Alturas | 1 | 1985 | 1985 |
| Henry | 1 | 1973 | 1973 |
| Bates | 1 | 2009 | 1996 |
Broad-tailed Hummingbird Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.