Species · Utah · BBS 2025 Release · 1966–2024
Redhead Population Trend in Utah
Redhead in Utah has declined: down 50% on the route-weighted index since 1986.
-50%Since 1986
21Routes In State
37Years
Notable Redhead Trends in Utah
No notable trend signals for Redhead in Utah. See the full index history below.
Redhead Population Forecast in Utah
If the recent trend holds, Redhead in Utah is projected to rise about 122% by 2029 — from 0.05 in 2024 to a central estimate of 0.11 (95% range 0.00–2.1). A 5-year backtest shows a typical error of ±344.7%, with 100% of held-out values landing inside the 95% band.
+122%Change by 2029
0.11Projected 2029 index
0.00–2.195% range
±344.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.23 | 0.00 | 2.2 |
| 2026 | 0.20 | 0.00 | 2.2 |
| 2027 | 0.17 | 0.00 | 2.1 |
| 2028 | 0.14 | 0.00 | 2.1 |
| 2029 | 0.11 | 0.00 | 2.1 |
Redhead Survey Routes in Utah
| Bear River | 31 | 2023 | 1993 |
| Hatch | 8 | 2003 | 2003 |
| Oak City | 6 | 1996 | 1988 |
| Promontory | 4 | 2011 | 1986 |
| Goshen | 4 | 2009 | 1998 |
| Beck | 3 | 1986 | 1986 |
| Callao | 3 | 2024 | 1992 |
| La Sal 2 | 2 | 2006 | 2006 |
| Navajo Lake | 2 | 1993 | 1969 |
| Lynn | 2 | 2021 | 1983 |
| M Warner Res | 2 | 2010 | 2001 |
| Castle Dale | 2 | 2015 | 2015 |
| Hardware Ranch | 2 | 1995 | 1995 |
| Neponset Res | 1 | 2017 | 1998 |
| E. Bear Lake | 1 | 2012 | 1995 |
| Notch Peak | 1 | 1993 | 1993 |
| Boulder | 1 | 2006 | 1992 |
| Randolph | 1 | 2023 | 1992 |
| Bicknell | 1 | 2018 | 1997 |
| Gold Hill | 1 | 2022 | 1991 |
| Main Canyon | 1 | 2010 | 1999 |
Redhead Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.