Species · Oregon · BBS 2025 Release · 1966–2024
California Towhee Population Trend in Oregon
California Towhee in Oregon has declined: down 45% on the route-weighted index since 1971.
-45%Since 1971
8Routes In State
48Years
Notable California Towhee Trends in Oregon
No notable trend signals for California Towhee in Oregon. See the full index history below.
California Towhee Population Forecast in Oregon
If the recent trend holds, California Towhee in Oregon is projected to fall about 100% by 2029 — from 0.05 in 2024 to a central estimate of 0.00 (95% range 0.00–0.11). A 5-year backtest shows a typical error of ±95.2%, with 100% of held-out values landing inside the 95% band.
-100%Change by 2029
0.00Projected 2029 index
0.00–0.1195% range
±95.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.01 | 0.00 | 0.11 |
| 2026 | 0.01 | 0.00 | 0.11 |
| 2027 | 0.00 | 0.00 | 0.11 |
| 2028 | 0.00 | 0.00 | 0.11 |
| 2029 | 0.00 | 0.00 | 0.11 |
California Towhee Survey Routes in Oregon
| Emigrant Lake 2 | 5 | 2024 | 2002 |
| Derby | 2 | 1993 | 1968 |
| Ruch | 1 | 2023 | 1993 |
| Secret Val | 1 | 1990 | 1978 |
| Days Creek | 1 | 1973 | 1973 |
| Emigrant Lk | 1 | 2001 | 1975 |
| Modoc Point | 1 | 2014 | 2014 |
| Sams Valley | 1 | 1999 | 1999 |
California Towhee Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.