Species · Oregon · BBS 2025 Release · 1966–2024
Gray Partridge Population Trend in Oregon
Gray Partridge in Oregon has collapsed: down 88% on the route-weighted index since 1978.
-88%Since 1978
9Routes In State
24Years
Notable Gray Partridge Trends in Oregon
long arc declinecomputed index
Gray Partridge has collapsed in Oregon: down 88% on the route-weighted index since 1978.
Gray Partridge Population Forecast in Oregon
If the recent trend holds, Gray Partridge in Oregon is projected to stay roughly flat through 2028, near 0.00 (95% range 0.00–0.09). A 5-year backtest shows a typical error of ±277.4%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2028
0.00Projected 2028 index
0.00–0.0995% range
±277.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2024 | 0.00 | 0.00 | 0.09 |
| 2025 | 0.00 | 0.00 | 0.09 |
| 2026 | 0.00 | 0.00 | 0.09 |
| 2027 | 0.00 | 0.00 | 0.09 |
| 2028 | 0.00 | 0.00 | 0.09 |
Gray Partridge Survey Routes in Oregon
Gray Partridge Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.