Species · Oregon · BBS 2025 Release · 1966–2024
Ruffed Grouse Population Trend in Oregon
Ruffed Grouse in Oregon has risen sharply: up 52% on the route-weighted index since 1971.
+52%Since 1971
48Routes In State
49Years
Notable Ruffed Grouse Trends in Oregon
long arc increasecomputed index
Ruffed Grouse has risen sharply in Oregon: up 52% on the route-weighted index since 1971.
Ruffed Grouse Population Forecast in Oregon
If the recent trend holds, Ruffed Grouse in Oregon is projected to rise about 89% by 2029 — from 0.05 in 2024 to a central estimate of 0.10 (95% range 0.00–0.23). A 5-year backtest shows a typical error of ±97.2%, with 100% of held-out values landing inside the 95% band.
+89%Change by 2029
0.10Projected 2029 index
0.00–0.2395% range
±97.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.10 | 0.00 | 0.23 |
| 2026 | 0.10 | 0.00 | 0.23 |
| 2027 | 0.10 | 0.00 | 0.23 |
| 2028 | 0.10 | 0.00 | 0.23 |
| 2029 | 0.10 | 0.00 | 0.23 |
Ruffed Grouse Survey Routes in Oregon
| Unity | 5 | 2004 | 1999 |
| Howard Mdws. | 4 | 2019 | 1994 |
| Flora | 2 | 2001 | 1996 |
| Logdell | 2 | 2024 | 1993 |
| Wickiup | 2 | 2024 | 1999 |
| Troy | 2 | 2021 | 1997 |
| Lorane | 2 | 2006 | 1995 |
| Sams Valley | 2 | 2019 | 2006 |
| Timber | 1 | 1978 | 1968 |
| Shellrock | 1 | 1998 | 1994 |
| Molalla | 1 | 2022 | 2006 |
| Albee | 1 | 2022 | 1989 |
| Summit Pr | 1 | 2022 | 2022 |
| Salado | 1 | 1972 | 1972 |
| Cool Camp | 1 | 2002 | 1988 |
| Riley Peak | 1 | 2007 | 2007 |
| Ochoco | 1 | 1982 | 1973 |
| Santiam | 1 | 2010 | 2008 |
| Zumwalt | 1 | 2004 | 1998 |
| Bull Run | 1 | 2016 | 2012 |
| Winberry | 1 | 1977 | 1977 |
| Days Creek | 1 | 2023 | 1985 |
| Joseph | 1 | 2022 | 2006 |
| Garfield | 1 | 1973 | 1973 |
| Mt Hood | 1 | 1978 | 1978 |
Ruffed Grouse Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.