Species · Colorado · BBS 2025 Release · 1966–2024
Redhead Population Trend in Colorado
Redhead in Colorado has edged down: down 17% on the route-weighted index since 1977.
-17%Since 1977
27Routes In State
39Years
Notable Redhead Trends in Colorado
No notable trend signals for Redhead in Colorado. See the full index history below.
Redhead Population Forecast in Colorado
If the recent trend holds, Redhead in Colorado is projected to stay roughly flat through 2029, near 0.06 (95% range 0.00–0.91). A 5-year backtest shows a typical error of ±176.2%, with 100% of held-out values landing inside the 95% band.
+2%Change by 2029
0.06Projected 2029 index
0.00–0.9195% range
±176.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.09 | 0.00 | 0.94 |
| 2026 | 0.08 | 0.00 | 0.93 |
| 2027 | 0.08 | 0.00 | 0.93 |
| 2028 | 0.07 | 0.00 | 0.92 |
| 2029 | 0.06 | 0.00 | 0.91 |
Redhead Survey Routes in Colorado
| Guffey | 8 | 2016 | 2016 |
| Julesburg | 8 | 2004 | 2004 |
| Kiowa | 6 | 2003 | 1973 |
| Rio Grnds Rs | 6 | 2012 | 1999 |
| Dinosaur | 6 | 2024 | 1999 |
| Thomasville | 6 | 1992 | 1992 |
| Mcphee Res. | 5 | 2019 | 1998 |
| Doyle Bridge | 5 | 1995 | 1995 |
| Falfa | 4 | 1987 | 1987 |
| Doyleville | 3 | 2007 | 1988 |
| Moffat | 2 | 1992 | 1992 |
| Dolores | 2 | 1975 | 1975 |
| Fort Morgan | 2 | 2009 | 2001 |
| Alamosa | 2 | 2023 | 1988 |
| Karval | 2 | 2019 | 2015 |
| Piedra | 2 | 2022 | 1993 |
| Fox Creek | 2 | 2021 | 2021 |
| San Luis | 2 | 2009 | 1991 |
| Arsenal | 1 | 1998 | 1998 |
| Fleming | 1 | 1977 | 1977 |
| Walden | 1 | 2010 | 1990 |
| Hudson | 1 | 2015 | 1990 |
| Willow Peak | 1 | 2010 | 2010 |
| Pritchett | 1 | 2008 | 2002 |
| Tincup | 1 | 2018 | 1995 |
Redhead Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.