Species · BCR 9 · BBS 2025 Release · 1966–2024
American Dipper In Great Basin
American Dipper in Great Basin has declined: down 30% on the route-weighted index since 1972.
-30%Since 1972
33Routes In Region
51Years
Notable Signals
No notable trend signals for American Dipper in Great Basin. See the full index history below.
Forecast
If the recent trend holds, American Dipper in Great Basin is projected to stay roughly flat through 2029, near 0.02 (95% range 0.00–0.06). A 5-year backtest shows a typical error of ±211.6%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.02Projected 2029 index
0.00–0.0695% range
±211.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.03 | 0.00 | 0.06 |
| 2026 | 0.02 | 0.00 | 0.06 |
| 2027 | 0.02 | 0.00 | 0.06 |
| 2028 | 0.02 | 0.00 | 0.06 |
| 2029 | 0.02 | 0.00 | 0.06 |
Routes In Great Basin
| Humboldt Nf | NEVADA | 2 | 2006 |
| Camp Sherman | OREGON | 2 | 1994 |
| Twisp | WASHINGTON | 2 | 1998 |
| Ronald | WASHINGTON | 2 | 2024 |
| Likely | CALIFORNIA | 1 | 1984 |
| Deep Springs | CALIFORNIA | 1 | 1977 |
| Iron Gate | CALIFORNIA | 1 | 1996 |
| Squirrel | IDAHO | 1 | 2002 |
| Magic Mtn | IDAHO | 1 | 2014 |
| Henry | IDAHO | 1 | 1981 |
| Jarbidge | NEVADA | 1 | 2009 |
| Imnaha | OREGON | 1 | 1993 |
| Paisley | OREGON | 1 | 2021 |
| Mt Hood | OREGON | 1 | 2015 |
| Adrian | OREGON | 1 | 1987 |
| Wizard Falls | OREGON | 1 | 2016 |
| Bly 2 | OREGON | 1 | 2008 |
| Badger Creek | OREGON | 1 | 2019 |
| Picture Flat | OREGON | 1 | 2018 |
| Hyrum | UTAH | 1 | 1979 |
| Hardware Ranch | UTAH | 1 | 2018 |
| Newhalem | WASHINGTON | 1 | 2011 |
| Index | WASHINGTON | 1 | 1971 |
| Rimrock | WASHINGTON | 1 | 2014 |
| Kendall | WASHINGTON | 1 | 2024 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.