Species · Colorado · BBS 2025 Release · 1966–2024
American Goshawk Population Trend in Colorado
American Goshawk in Colorado has fallen sharply: down 60% on the route-weighted index since 1983.
-60%Since 1983
36Routes In State
31Years
Notable American Goshawk Trends in Colorado
long arc declinecomputed index
American Goshawk has fallen sharply in Colorado: down 60% on the route-weighted index since 1983.
American Goshawk Population Forecast in Colorado
If the recent trend holds, American Goshawk in Colorado is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.04). A 5-year backtest shows a typical error of ±34.7%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.01Projected 2029 index
0.00–0.0495% range
±34.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.01 | 0.00 | 0.04 |
| 2026 | 0.01 | 0.00 | 0.04 |
| 2027 | 0.01 | 0.00 | 0.04 |
| 2028 | 0.01 | 0.00 | 0.04 |
| 2029 | 0.01 | 0.00 | 0.04 |
American Goshawk Survey Routes in Colorado
| Tarryall | 2 | 2014 | 2008 |
| Baxter Pass | 2 | 2013 | 2013 |
| Yampa | 1 | 1972 | 1972 |
| Mount Evans | 1 | 2012 | 1997 |
| Mesaverde Np | 1 | 2000 | 2000 |
| Aspen | 1 | 1997 | 1997 |
| Parlin | 1 | 2015 | 1977 |
| Falfa | 1 | 2021 | 2021 |
| Rio Grnds Rs | 1 | 2006 | 2006 |
| Weston Pass 2 | 1 | 2018 | 2018 |
| Wray Gulch | 1 | 2005 | 2005 |
| Lost Lake | 1 | 2000 | 2000 |
| Red Cliff | 1 | 2002 | 1999 |
| Uncompahgre | 1 | 2006 | 2006 |
| Castleton | 1 | 2013 | 1996 |
| Guffey | 1 | 2017 | 1991 |
| Comanche Pk | 1 | 2015 | 2006 |
| Dolores Riv | 1 | 2000 | 2000 |
| Ragged Mtn. | 1 | 2004 | 1994 |
| Marshall Pas | 1 | 2012 | 1999 |
| Gold Hill 2 | 1 | 2021 | 2021 |
| Buffalo Park | 1 | 2016 | 1995 |
| Flattops | 1 | 2003 | 2003 |
| Thomasville | 1 | 2002 | 2002 |
| Guanella Pas | 1 | 2012 | 2012 |
American Goshawk Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.