Species · Alaska · BBS 2025 Release · 1966–2024
Green-winged Teal Population Trend in Alaska
Green-winged Teal in Alaska has fallen sharply: down 52% on the route-weighted index since 1984.
-52%Since 1984
82Routes In State
42Years
Notable Green-winged Teal Trends in Alaska
long arc declinecomputed index
Green-winged Teal has fallen sharply in Alaska: down 52% on the route-weighted index since 1984.
Green-winged Teal Population Forecast in Alaska
If the recent trend holds, Green-winged Teal in Alaska is projected to fall about 94% by 2029 — from 1.5 in 2024 to a central estimate of 0.09 (95% range 0.00–2.1). A 5-year backtest shows a typical error of ±70.7%, with 100% of held-out values landing inside the 95% band.
-94%Change by 2029
0.09Projected 2029 index
0.00–2.195% range
±70.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.27 | 0.00 | 2.3 |
| 2026 | 0.23 | 0.00 | 2.2 |
| 2027 | 0.18 | 0.00 | 2.2 |
| 2028 | 0.14 | 0.00 | 2.1 |
| 2029 | 0.09 | 0.00 | 2.1 |
Green-winged Teal Survey Routes in Alaska
| Slana | 19 | 2024 | 1995 |
| Hather Creek | 12 | 2024 | 1993 |
| Adak | 11 | 2001 | 1983 |
| Mud River | 11 | 2024 | 1993 |
| Kotzebue | 11 | 2024 | 2002 |
| Kotzebue (Short) | 9 | 1994 | 1986 |
| Unalakleet River | 8 | 2024 | 1996 |
| Kodiak | 6 | 1983 | 1983 |
| Happy Valley | 6 | 2024 | 1993 |
| Kanuti Canyn | 6 | 2024 | 1995 |
| Gweek River | 6 | 2002 | 1994 |
| Galbraith L. | 5 | 2022 | 1996 |
| Anvik River | 5 | 2024 | 1998 |
| Kanuti Lake | 5 | 2024 | 2006 |
| Sheep Mtn | 4 | 2006 | 1985 |
| Bear Creek | 4 | 1990 | 1986 |
| Utqiagvik | 4 | 2023 | 2021 |
| Chena Hot Spring 2 | 4 | 2021 | 1999 |
| Pinoche Tral (Short) | 4 | 1984 | 1984 |
| Copper River | 4 | 1996 | 1993 |
| Kanektok Riv | 4 | 2003 | 1995 |
| Maclaren | 3 | 2024 | 1986 |
| Haines | 3 | 1994 | 1994 |
| Kalifonsky | 3 | 2016 | 2015 |
| Chicken | 3 | 2024 | 1992 |
Green-winged Teal Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.