Species · Colorado · BBS 2025 Release · 1966–2024
Chukar Population Trend in Colorado
Chukar in Colorado has fallen sharply: down 66% on the route-weighted index since 1985.
-66%Since 1985
6Routes In State
29Years
Notable Chukar Trends in Colorado
long arc declinecomputed index
Chukar has fallen sharply in Colorado: down 66% on the route-weighted index since 1985.
Chukar Population Forecast in Colorado
If the recent trend holds, Chukar in Colorado is projected to fall about 78% by 2029 — from 0.10 in 2024 to a central estimate of 0.02 (95% range 0.00–0.14). A 5-year backtest shows a typical error of ±121.6%, with 80% of held-out values landing inside the 95% band.
-78%Change by 2029
0.02Projected 2029 index
0.00–0.1495% range
±121.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.03 | 0.00 | 0.15 |
| 2026 | 0.03 | 0.00 | 0.14 |
| 2027 | 0.03 | 0.00 | 0.14 |
| 2028 | 0.02 | 0.00 | 0.14 |
| 2029 | 0.02 | 0.00 | 0.14 |
Chukar Survey Routes in Colorado
| Baxter Pass | 7 | 2024 | 1995 |
| Douglas Pass | 3 | 2024 | 1982 |
| Mesaverde Np | 2 | 2006 | 2006 |
| Delta | 1 | 2001 | 1975 |
| Basin | 1 | 2009 | 2009 |
| Wray Gulch | 1 | 1988 | 1988 |
Chukar Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.