Species · Utah · BBS 2025 Release · 1966–2024
Townsend's Solitaire Population Trend in Utah
Townsend's Solitaire in Utah has fallen sharply: down 69% on the route-weighted index since 1975.
-69%Since 1975
39Routes In State
45Years
Notable Townsend's Solitaire Trends in Utah
long arc declinecomputed index
Townsend's Solitaire has fallen sharply in Utah: down 69% on the route-weighted index since 1975.
Townsend's Solitaire Population Forecast in Utah
If the recent trend holds, Townsend's Solitaire in Utah is projected to stay roughly flat through 2029, near 0.12 (95% range 0.00–0.36). A 5-year backtest shows a typical error of ±37.2%, with 100% of held-out values landing inside the 95% band.
+0%Change by 2029
0.12Projected 2029 index
0.00–0.3695% range
±37.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.13 | 0.00 | 0.38 |
| 2026 | 0.13 | 0.00 | 0.37 |
| 2027 | 0.13 | 0.00 | 0.37 |
| 2028 | 0.12 | 0.00 | 0.36 |
| 2029 | 0.12 | 0.00 | 0.36 |
Townsend's Solitaire Survey Routes in Utah
| Moon Lake 2 | 4 | 2023 | 2004 |
| Fayette | 3 | 2010 | 1993 |
| Goose Creek Mtn. | 3 | 1998 | 1998 |
| Beck 2 | 3 | 2018 | 1990 |
| Heber Mtn. | 3 | 2024 | 1996 |
| La Sal 2 | 2 | 2005 | 2003 |
| Navajo Lake | 2 | 2022 | 1971 |
| Boulder | 2 | 2008 | 1987 |
| Moon Lake | 2 | 2003 | 1997 |
| Skyline Driv | 2 | 2012 | 1995 |
| Hyrum | 1 | 1977 | 1975 |
| Lost Cr. Res | 1 | 2015 | 1995 |
| Grizzly Rdge | 1 | 2024 | 1992 |
| Logan Canyon | 1 | 2016 | 1997 |
| Red Spur Mtn. | 1 | 2018 | 1997 |
| Willow Creek | 1 | 2000 | 2000 |
| Bryce Canyon | 1 | 2024 | 1990 |
| Beaver | 1 | 2024 | 1980 |
| Desert View | 1 | 2015 | 1995 |
| Woodruff | 1 | 2023 | 2002 |
| Soapstone | 1 | 2023 | 1997 |
| Leamington | 1 | 1992 | 1992 |
| Richfield | 1 | 2009 | 2000 |
| Gooseberry | 1 | 2022 | 1996 |
| La Sal | 1 | 2000 | 2000 |
Townsend's Solitaire Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.