Species · BCR 10 · BBS 2025 Release · 1966–2024
Black-throated Gray Warbler In Northern Rockies
Black-throated Gray Warbler in Northern Rockies has declined: down 25% on the route-weighted index since 1990.
-25%Since 1990
15Routes In Region
29Years
Notable Signals
No notable trend signals for Black-throated Gray Warbler in Northern Rockies. See the full index history below.
Forecast
If the recent trend holds, Black-throated Gray Warbler in Northern Rockies is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.05). A 5-year backtest shows a typical error of ±109.3%, with 40% of held-out values landing inside the 95% band.
n/aChange by 2029
0.01Projected 2029 index
0.00–0.0595% range
±109.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.01 | 0.00 | 0.05 |
| 2026 | 0.01 | 0.00 | 0.05 |
| 2027 | 0.01 | 0.00 | 0.05 |
| 2028 | 0.01 | 0.00 | 0.05 |
| 2029 | 0.01 | 0.00 | 0.05 |
Routes In Northern Rockies
| Browns Park | COLORADO | 2 | 2024 |
| Albee | OREGON | 2 | 1968 |
| Madras | OREGON | 2 | 2023 |
| L Pend O Nwr | WASHINGTON | 2 | 1995 |
| Nowood | WYOMING | 2 | 1990 |
| Rock Springs | WYOMING | 2 | 2015 |
| Maybell | COLORADO | 1 | 2024 |
| Flora | OREGON | 1 | 1991 |
| Mount Vernon | OREGON | 1 | 2011 |
| Hash Rock | OREGON | 1 | 1988 |
| Hells Canyon | OREGON | 1 | 1996 |
| Barnhouse | OREGON | 1 | 2023 |
| Twickenham | OREGON | 1 | 2024 |
| E. Bear Lake | UTAH | 1 | 2022 |
| Chewelah | WASHINGTON | 1 | 2007 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.