Species · Oregon · BBS 2025 Release · 1966–2024
American Wigeon Population Trend in Oregon
American Wigeon in Oregon has surged: up 79% on the route-weighted index since 1972.
+79%Since 1972
22Routes In State
45Years
Notable American Wigeon Trends in Oregon
long arc increasecomputed index
American Wigeon has surged in Oregon: up 79% on the route-weighted index since 1972.
American Wigeon Population Forecast in Oregon
If the recent trend holds, American Wigeon in Oregon is projected to fall about 59% by 2029 — from 0.47 in 2024 to a central estimate of 0.19 (95% range 0.00–0.52). A 5-year backtest shows a typical error of ±69.6%, with 100% of held-out values landing inside the 95% band.
-59%Change by 2029
0.19Projected 2029 index
0.00–0.5295% range
±69.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.19 | 0.00 | 0.51 |
| 2026 | 0.19 | 0.00 | 0.52 |
| 2027 | 0.19 | 0.00 | 0.52 |
| 2028 | 0.19 | 0.00 | 0.52 |
| 2029 | 0.19 | 0.00 | 0.52 |
American Wigeon Survey Routes in Oregon
| Catlow Rim | 24 | 2024 | 1994 |
| Fish Lake | 20 | 2024 | 1972 |
| Princeton | 15 | 1981 | 1972 |
| Clover Creek | 5 | 1989 | 1989 |
| Merrill | 5 | 2005 | 2005 |
| Blizzard Gap | 4 | 1994 | 1985 |
| Warner Vally | 4 | 2023 | 1994 |
| Green Mtn. | 3 | 1997 | 1997 |
| Sparta | 2 | 1994 | 1992 |
| Barnes Val | 2 | 1973 | 1973 |
| Harney Lake | 2 | 2000 | 1993 |
| Sheaville | 2 | 2012 | 2012 |
| Flook Lake | 2 | 2012 | 1996 |
| Three Forks | 1 | 2005 | 2005 |
| Zumwalt | 1 | 1998 | 1998 |
| Malheur Nwr | 1 | 1991 | 1988 |
| Modoc Point | 1 | 1971 | 1971 |
| Willow Spg | 1 | 1969 | 1969 |
| Adair | 1 | 2021 | 1997 |
| Joseph | 1 | 1987 | 1987 |
| Bly | 1 | 1992 | 1992 |
| Chinchalo | 1 | 2017 | 2017 |
American Wigeon Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.