Species · BCR 32 · BBS 2025 Release · 1966–2024
Lewis's Woodpecker In Coastal California
Lewis's Woodpecker in Coastal California has fallen sharply: down 74% on the route-weighted index since 1972.
-74%Since 1972
18Routes In Region
26Years
Notable Signals
long arc declinecomputed index
Lewis's Woodpecker has fallen sharply in Coastal California: down 74% on the route-weighted index since 1972.
Forecast
If the recent trend holds, Lewis's Woodpecker in Coastal California is projected to stay roughly flat through 2018, near 0.00 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±188.5%, with 80% of held-out values landing inside the 95% band.
n/aChange by 2018
0.00Projected 2018 index
0.00–0.1095% range
±188.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2014 | 0.01 | 0.00 | 0.11 |
| 2015 | 0.00 | 0.00 | 0.11 |
| 2016 | 0.00 | 0.00 | 0.10 |
| 2017 | 0.00 | 0.00 | 0.10 |
| 2018 | 0.00 | 0.00 | 0.10 |
Routes In Coastal California
| Lockwood | CALIFORNIA | 4 | 1973 |
| Coalinga | CALIFORNIA | 3 | 1976 |
| Hollister | CALIFORNIA | 2 | 1992 |
| Redding | CALIFORNIA | 2 | 1977 |
| Hughson | CALIFORNIA | 1 | 1981 |
| Tres Pinos | CALIFORNIA | 1 | 1994 |
| Parkfield | CALIFORNIA | 1 | 2013 |
| Cohasset | CALIFORNIA | 1 | 1976 |
| Ono | CALIFORNIA | 1 | 2008 |
| Adelaida | CALIFORNIA | 1 | 1977 |
| Mt Baldy | CALIFORNIA | 1 | 1997 |
| Creston | CALIFORNIA | 1 | 1985 |
| Gold Hill | CALIFORNIA | 1 | 2003 |
| Yolla Bolly | CALIFORNIA | 1 | 1998 |
| Bartlett Sps | CALIFORNIA | 1 | 1977 |
| Copperopolis | CALIFORNIA | 1 | 2008 |
| Oneals | CALIFORNIA | 1 | 1993 |
| Livermore | CALIFORNIA | 1 | 1976 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.