Species · BCR 15 · BBS 2025 Release · 1966–2024
Canyon Wren In Sierra Nevada
Canyon Wren in Sierra Nevada has declined: down 46% on the route-weighted index since 1974.
-46%Since 1974
17Routes In Region
50Years
Notable Signals
No notable trend signals for Canyon Wren in Sierra Nevada. See the full index history below.
Forecast
If the recent trend holds, Canyon Wren in Sierra Nevada is projected to fall about 64% by 2029 — from 0.42 in 2024 to a central estimate of 0.15 (95% range 0.00–0.64). A 5-year backtest shows a typical error of ±80.6%, with 100% of held-out values landing inside the 95% band.
-64%Change by 2029
0.15Projected 2029 index
0.00–0.6495% range
±80.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.18 | 0.00 | 0.67 |
| 2026 | 0.18 | 0.00 | 0.66 |
| 2027 | 0.17 | 0.00 | 0.65 |
| 2028 | 0.16 | 0.00 | 0.64 |
| 2029 | 0.15 | 0.00 | 0.64 |
Routes In Sierra Nevada
| Kings Canyon | CALIFORNIA | 7 | 2024 |
| Forest Hill | CALIFORNIA | 3 | 2022 |
| Bass Lake | CALIFORNIA | 2 | 2019 |
| Silver City | CALIFORNIA | 2 | 2013 |
| Pine Mountain | CALIFORNIA | 2 | 1997 |
| Dardanelle | CALIFORNIA | 1 | 2015 |
| Johnsville | CALIFORNIA | 1 | 1985 |
| Woodfords | CALIFORNIA | 1 | 1990 |
| Tuolumne Grove | CALIFORNIA | 1 | 2022 |
| Butte Meadow | CALIFORNIA | 1 | 1981 |
| Genesee | CALIFORNIA | 1 | 2023 |
| Higgins Corn | CALIFORNIA | 1 | 1981 |
| Downieville | CALIFORNIA | 1 | 2004 |
| Lakeshore | CALIFORNIA | 1 | 2011 |
| Paxton | CALIFORNIA | 1 | 2015 |
| Chilcoot | CALIFORNIA | 1 | 2024 |
| Strawberry | CALIFORNIA | 1 | 2015 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.