Species · BCR 32 · BBS 2025 Release · 1966–2024
White-headed Woodpecker In Coastal California
White-headed Woodpecker in Coastal California has collapsed: down 82% on the route-weighted index since 1971.
-82%Since 1971
19Routes In Region
51Years
Notable Signals
long arc declinecomputed index
White-headed Woodpecker has collapsed in Coastal California: down 82% on the route-weighted index since 1971.
Forecast
If the recent trend holds, White-headed Woodpecker in Coastal California is projected to rise about 49% by 2027 — from 0.06 in 2022 to a central estimate of 0.09 (95% range 0.00–0.31). A 5-year backtest shows a typical error of ±113.2%, with 80% of held-out values landing inside the 95% band.
+49%Change by 2027
0.09Projected 2027 index
0.00–0.3195% range
±113.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2023 | 0.10 | 0.00 | 0.32 |
| 2024 | 0.10 | 0.00 | 0.32 |
| 2025 | 0.10 | 0.00 | 0.32 |
| 2026 | 0.09 | 0.00 | 0.31 |
| 2027 | 0.09 | 0.00 | 0.31 |
Routes In Coastal California
| Lake Hemet | CALIFORNIA | 5 | 1986 |
| Valyermo | CALIFORNIA | 4 | 2019 |
| Fallsvale | CALIFORNIA | 3 | 1981 |
| Angelus Oaks | CALIFORNIA | 3 | 2017 |
| Lake Hemet 2 | CALIFORNIA | 2 | 2016 |
| Mt Pinos | CALIFORNIA | 1 | 2003 |
| Lake Success | CALIFORNIA | 1 | 1980 |
| Big Bear | CALIFORNIA | 1 | 1983 |
| Tujunga | CALIFORNIA | 1 | 1995 |
| Lockwood Val | CALIFORNIA | 1 | 2010 |
| Mt Baldy | CALIFORNIA | 1 | 2022 |
| Green Valley | CALIFORNIA | 1 | 2022 |
| White River | CALIFORNIA | 1 | 1990 |
| Mt Pinos 2 | CALIFORNIA | 1 | 2021 |
| Tehama | CALIFORNIA | 1 | 2011 |
| Bartlett Sps | CALIFORNIA | 1 | 1985 |
| Cleveland Nf | CALIFORNIA | 1 | 2005 |
| Woodlands | CALIFORNIA | 1 | 2022 |
| Hough Springs | CALIFORNIA | 1 | 2007 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.