Species · Oregon · BBS 2025 Release · 1966–2024
Dusky Grouse Population Trend in Oregon
Dusky Grouse in Oregon has risen sharply: up 67% on the route-weighted index since 1998.
+67%Since 1998
13Routes In State
19Years
Notable Dusky Grouse Trends in Oregon
No notable trend signals for Dusky Grouse in Oregon. See the full index history below.
Dusky Grouse Population Forecast in Oregon
If the recent trend holds, Dusky Grouse in Oregon is projected to stay roughly flat through 2029, near 0.03 (95% range 0.01–0.05). A 5-year backtest shows a typical error of ±63.1%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.03Projected 2029 index
0.01–0.0595% range
±63.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.03 | 0.01 | 0.05 |
| 2026 | 0.03 | 0.01 | 0.05 |
| 2027 | 0.03 | 0.01 | 0.05 |
| 2028 | 0.03 | 0.01 | 0.05 |
| 2029 | 0.03 | 0.01 | 0.05 |
Dusky Grouse Survey Routes in Oregon
| Albee | 1 | 2013 | 2013 |
| Flora | 1 | 2023 | 2017 |
| Eagle Creek | 1 | 2022 | 1996 |
| Wickiup | 1 | 2015 | 2015 |
| Howard Mdws. | 1 | 2024 | 2008 |
| Mount Vernon | 1 | 2005 | 1996 |
| Hash Rock | 1 | 2024 | 2024 |
| Hells Canyon | 1 | 1998 | 1998 |
| Desolation | 1 | 2007 | 2007 |
| Ochoco | 1 | 2000 | 1994 |
| Barnhouse | 1 | 2024 | 2009 |
| Silvies | 1 | 2024 | 2024 |
| Donelly 2 | 1 | 2018 | 2018 |
Dusky Grouse Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.