Species · Utah · BBS 2025 Release · 1966–2024
Blue-gray Gnatcatcher Population Trend in Utah
Blue-gray Gnatcatcher in Utah has surged: up 384% on the route-weighted index since 1985.
+384%Since 1985
80Routes In State
41Years
Notable Blue-gray Gnatcatcher Trends in Utah
long arc increasecomputed index
Blue-gray Gnatcatcher has surged in Utah: up 384% on the route-weighted index since 1985.
Blue-gray Gnatcatcher Population Forecast in Utah
If the recent trend holds, Blue-gray Gnatcatcher in Utah is projected to rise about 23% by 2029 — from 2.7 in 2024 to a central estimate of 3.4 (95% range 2.1–4.7). A 5-year backtest shows a typical error of ±57.7%, with 60% of held-out values landing inside the 95% band.
+23%Change by 2029
3.4Projected 2029 index
2.1–4.795% range
±57.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 3.2 | 1.9 | 4.5 |
| 2026 | 3.2 | 1.9 | 4.6 |
| 2027 | 3.3 | 2.0 | 4.6 |
| 2028 | 3.3 | 2.0 | 4.6 |
| 2029 | 3.4 | 2.1 | 4.7 |
Blue-gray Gnatcatcher Survey Routes in Utah
| Moquith Mtn | 19 | 2024 | 1987 |
| Shivwitz | 18 | 2024 | 1992 |
| La Sal 3 | 14 | 2024 | 2007 |
| La Sal 2 | 12 | 2006 | 2003 |
| Moab | 10 | 2024 | 1986 |
| Willow Creek | 9 | 2024 | 1986 |
| Main Canyon | 9 | 2024 | 1988 |
| Cleveland | 8 | 2024 | 1992 |
| Cane Spr Des | 8 | 2010 | 1992 |
| Newcastle | 7 | 2022 | 1997 |
| Monticello | 7 | 2024 | 1998 |
| Canyonlands | 7 | 2006 | 1991 |
| Wellington 3 | 6 | 2024 | 2012 |
| Bonanza | 6 | 2015 | 1992 |
| Jericho Junction | 6 | 2024 | 1997 |
| Glen Canyon | 5 | 2024 | 1992 |
| Arches Np | 5 | 2011 | 1989 |
| Bryce Canyon | 5 | 2023 | 1990 |
| Crawford Mts | 5 | 2023 | 2005 |
| Desert View | 4 | 2024 | 1995 |
| Boulder | 4 | 2019 | 1986 |
| Jensen | 4 | 2024 | 1995 |
| Leamington | 4 | 1997 | 1992 |
| Castle Dale | 4 | 2023 | 1993 |
| Lake Powell | 4 | 2009 | 1994 |
Blue-gray Gnatcatcher Population Trend in Other States
alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.