Species · Utah · BBS 2025 Release · 1966–2024
Western Bluebird Population Trend in Utah
Western Bluebird in Utah has edged down: down 20% on the route-weighted index since 1972.
-20%Since 1972
39Routes In State
42Years
Notable Western Bluebird Trends in Utah
No notable trend signals for Western Bluebird in Utah. See the full index history below.
Western Bluebird Population Forecast in Utah
If the recent trend holds, Western Bluebird in Utah is projected to rise about 21% by 2029 — from 0.39 in 2024 to a central estimate of 0.47 (95% range 0.00–0.97). A 5-year backtest shows a typical error of ±31.1%, with 100% of held-out values landing inside the 95% band.
+21%Change by 2029
0.47Projected 2029 index
0.00–0.9795% range
±31.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.47 | 0.00 | 0.97 |
| 2026 | 0.47 | 0.00 | 0.97 |
| 2027 | 0.47 | 0.00 | 0.97 |
| 2028 | 0.47 | 0.00 | 0.97 |
| 2029 | 0.47 | 0.00 | 0.97 |
Western Bluebird Survey Routes in Utah
| La Sal 2 | 12 | 2006 | 2003 |
| Bryce Canyon | 12 | 2024 | 1990 |
| Dragerton | 6 | 1998 | 1969 |
| Shivwitz | 6 | 2015 | 2014 |
| Jericho Junction | 6 | 1997 | 1997 |
| Willow Creek | 4 | 2001 | 2000 |
| Newcastle | 4 | 2022 | 1998 |
| Escalante | 4 | 2024 | 2019 |
| Moquith Mtn | 4 | 2024 | 1987 |
| Navajo Lake | 3 | 2024 | 1968 |
| Boulder | 3 | 2019 | 1991 |
| Dixie Nf | 3 | 2021 | 1993 |
| Glen Canyon | 3 | 2023 | 2014 |
| Pine Creek | 3 | 2012 | 1997 |
| La Sal 3 | 3 | 2022 | 2009 |
| La Sal | 2 | 1999 | 1996 |
| Ferron | 2 | 2016 | 2016 |
| Bicknell | 2 | 2012 | 2006 |
| Canyonlands | 2 | 1996 | 1996 |
| Blanding | 2 | 2023 | 1994 |
| Beck | 1 | 1972 | 1972 |
| Altonah | 1 | 2005 | 2004 |
| Goshen | 1 | 2017 | 2017 |
| Castleton | 1 | 1976 | 1976 |
| Hite | 1 | 2005 | 1993 |
Western Bluebird Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.