Species · Oregon · BBS 2025 Release · 1966–2024
Blue-winged Teal Population Trend in Oregon
Blue-winged Teal in Oregon has fallen sharply: down 71% on the route-weighted index since 1972.
-71%Since 1972
23Routes In State
27Years
Notable Blue-winged Teal Trends in Oregon
long arc declinecomputed index
Blue-winged Teal has fallen sharply in Oregon: down 70% on the route-weighted index since 1972.
Blue-winged Teal Population Forecast in Oregon
If the recent trend holds, Blue-winged Teal in Oregon is projected to stay roughly flat through 2026, near 0.01 (95% range 0.00–0.22). A 5-year backtest shows a typical error of ±52.1%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2026
0.01Projected 2026 index
0.00–0.2295% range
±52.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2022 | 0.02 | 0.00 | 0.23 |
| 2023 | 0.01 | 0.00 | 0.23 |
| 2024 | 0.01 | 0.00 | 0.23 |
| 2025 | 0.01 | 0.00 | 0.23 |
| 2026 | 0.01 | 0.00 | 0.22 |
Blue-winged Teal Survey Routes in Oregon
| Clover Creek | 5 | 1977 | 1977 |
| Umpqua | 3 | 1968 | 1968 |
| Sparta | 3 | 1977 | 1977 |
| Canby | 3 | 2016 | 2016 |
| Joseph | 2 | 2015 | 1977 |
| Princeton | 2 | 1983 | 1972 |
| Blizzard Gap | 2 | 2018 | 1988 |
| Green Mtn. | 2 | 1998 | 1998 |
| Harney Lake | 2 | 1998 | 1998 |
| Merrill | 2 | 2004 | 2004 |
| Warner Vally | 2 | 2011 | 2011 |
| Umatilla | 2 | 1998 | 1994 |
| Crooked Riv. | 2 | 2002 | 2002 |
| Sheaville | 2 | 2016 | 2016 |
| Ordnance | 1 | 1977 | 1972 |
| Albee | 1 | 1972 | 1972 |
| Imnaha | 1 | 1974 | 1974 |
| Zumwalt | 1 | 2002 | 1998 |
| Wagontire | 1 | 1971 | 1971 |
| Modoc Point | 1 | 2014 | 1973 |
| Adair | 1 | 2011 | 2000 |
| Fish Lake | 1 | 2021 | 1977 |
| Catlow Rim | 1 | 2015 | 2015 |
Blue-winged Teal Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.