Species · Oregon · BBS 2025 Release · 1966–2024
Green-winged Teal Population Trend in Oregon
Green-winged Teal in Oregon has risen sharply: up 52% on the route-weighted index since 1973.
+52%Since 1973
34Routes In State
41Years
Notable Green-winged Teal Trends in Oregon
long arc increasecomputed index
Green-winged Teal has risen sharply in Oregon: up 51% on the route-weighted index since 1973.
Green-winged Teal Population Forecast in Oregon
If the recent trend holds, Green-winged Teal in Oregon is projected to fall about 59% by 2029 — from 0.05 in 2024 to a central estimate of 0.02 (95% range 0.00–0.50). A 5-year backtest shows a typical error of ±42.4%, with 100% of held-out values landing inside the 95% band.
-59%Change by 2029
0.02Projected 2029 index
0.00–0.5095% range
±42.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.03 | 0.00 | 0.51 |
| 2026 | 0.03 | 0.00 | 0.51 |
| 2027 | 0.03 | 0.00 | 0.50 |
| 2028 | 0.03 | 0.00 | 0.50 |
| 2029 | 0.02 | 0.00 | 0.50 |
Green-winged Teal Survey Routes in Oregon
| Catlow Rim | 10 | 2023 | 1995 |
| Blizzard Gap | 7 | 2004 | 1985 |
| Zumwalt | 4 | 2004 | 1997 |
| Clover Creek | 4 | 1989 | 1989 |
| Emigrant Lake 2 | 3 | 2008 | 2008 |
| Joseph | 3 | 2023 | 1984 |
| Silver Creek | 3 | 1996 | 1996 |
| Warner Vally | 3 | 2017 | 1994 |
| Chinchalo | 3 | 2014 | 2009 |
| Malheur Nwr | 2 | 1998 | 1998 |
| Bly 2 | 2 | 2024 | 2010 |
| Barnes Val | 2 | 1987 | 1984 |
| Emigrant Lk | 2 | 1973 | 1973 |
| Bly | 2 | 1995 | 1995 |
| Fish Lake | 2 | 1978 | 1972 |
| Battle Mtn | 2 | 1999 | 1999 |
| Picture Flat | 2 | 2017 | 2009 |
| Sheaville | 2 | 2024 | 2014 |
| Three Forks | 1 | 2011 | 2009 |
| Santiam | 1 | 2014 | 2014 |
| Nicolai Mtn. | 1 | 2024 | 2024 |
| Bridgeport | 1 | 2007 | 1990 |
| Buchanan | 1 | 1983 | 1983 |
| Alvord Lake | 1 | 1987 | 1987 |
| Willow Spg | 1 | 1969 | 1969 |
Green-winged Teal Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.