Species · BCR 10 · BBS 2025 Release · 1966–2024
Green-winged Teal In Northern Rockies
Green-winged Teal in Northern Rockies has edged down: down 18% on the route-weighted index since 1976.
-18%Since 1976
97Routes In Region
50Years
Notable Signals
No notable trend signals for Green-winged Teal in Northern Rockies. See the full index history below.
Forecast
If the recent trend holds, Green-winged Teal in Northern Rockies is projected to stay roughly flat through 2029, near 0.11 (95% range 0.00–0.41). A 5-year backtest shows a typical error of ±66.5%, with 100% of held-out values landing inside the 95% band.
+3%Change by 2029
0.11Projected 2029 index
0.00–0.4195% range
±66.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.13 | 0.00 | 0.43 |
| 2026 | 0.13 | 0.00 | 0.42 |
| 2027 | 0.12 | 0.00 | 0.42 |
| 2028 | 0.11 | 0.00 | 0.41 |
| 2029 | 0.11 | 0.00 | 0.41 |
Routes In Northern Rockies
| Neponset Res | UTAH | 12 | 2017 |
| Saleratus Cr | UTAH | 12 | 2018 |
| Harmony | WYOMING | 12 | 2022 |
| Moose | WYOMING | 9 | 1993 |
| Rawlins | WYOMING | 9 | 1993 |
| Nowood | WYOMING | 8 | 2024 |
| Patrick Draw 2 | WYOMING | 8 | 1982 |
| Clark | WYOMING | 5 | 2001 |
| Daniel | WYOMING | 5 | 1988 |
| Green River | WYOMING | 5 | 1981 |
| Hayden Val | WYOMING | 5 | 1986 |
| Sawtooth City 2 | IDAHO | 4 | 2017 |
| Lima | MONTANA | 4 | 2006 |
| Clover Creek | OREGON | 4 | 1989 |
| E. Bear Lake | UTAH | 4 | 2019 |
| Patrick Draw | WYOMING | 4 | 1980 |
| Gas Hills | WYOMING | 4 | 1993 |
| Shirley | WYOMING | 4 | 2008 |
| Yellowstone | WYOMING | 4 | 2021 |
| Silver Creek | OREGON | 3 | 1996 |
| Chewelah | WASHINGTON | 3 | 1990 |
| Ne Entrance | WYOMING | 3 | 2019 |
| Ervay | WYOMING | 3 | 2024 |
| Crazy Woman | WYOMING | 3 | 2014 |
| Maybell | COLORADO | 2 | 1993 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.