Species · Utah · BBS 2025 Release · 1966–2024
Dusky Grouse Population Trend in Utah
Dusky Grouse in Utah has declined: down 36% on the route-weighted index since 1998.
-36%Since 1998
13Routes In State
22Years
Notable Dusky Grouse Trends in Utah
No notable trend signals for Dusky Grouse in Utah. See the full index history below.
Dusky Grouse Population Forecast in Utah
If the recent trend holds, Dusky Grouse in Utah is projected to stay roughly flat through 2029, near 0.02 (95% range 0.00–0.06). A 5-year backtest shows a typical error of ±137.3%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.02Projected 2029 index
0.00–0.0695% range
±137.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.02 | 0.00 | 0.06 |
| 2026 | 0.02 | 0.00 | 0.06 |
| 2027 | 0.02 | 0.00 | 0.06 |
| 2028 | 0.02 | 0.00 | 0.06 |
| 2029 | 0.02 | 0.00 | 0.06 |
Dusky Grouse Survey Routes in Utah
| Saleratus Cr | 4 | 2005 | 2005 |
| Alton 2 | 1 | 2024 | 2021 |
| Lost Cr. Res | 1 | 2012 | 1998 |
| Ant Flat-Ogden Can | 1 | 2009 | 2009 |
| Red Spur Mtn. | 1 | 2012 | 2012 |
| La Sal 2 | 1 | 2006 | 2006 |
| Bryce Canyon | 1 | 2021 | 2021 |
| La Sal 3 | 1 | 2018 | 2008 |
| Fish Lake Nf | 1 | 2016 | 1996 |
| Navajo Lake | 1 | 2001 | 1996 |
| Main Canyon | 1 | 2006 | 2006 |
| Soapstone | 1 | 2012 | 1996 |
| Moon Lake | 1 | 1994 | 1994 |
Dusky Grouse Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.