Species · California · BBS 2025 Release · 1966–2024
White-headed Woodpecker Population Trend in California
White-headed Woodpecker in California has surged: up 117% on the route-weighted index since 1970.
+117%Since 1970
85Routes In State
56Years
Notable White-headed Woodpecker Trends in California
long arc increasecomputed index
White-headed Woodpecker has surged in California: up 117% on the route-weighted index since 1970.
White-headed Woodpecker Population Forecast in California
If the recent trend holds, White-headed Woodpecker in California is projected to rise about 64% by 2029 — from 0.38 in 2024 to a central estimate of 0.61 (95% range 0.36–0.87). A 5-year backtest shows a typical error of ±27.1%, with 80% of held-out values landing inside the 95% band.
+64%Change by 2029
0.61Projected 2029 index
0.36–0.8795% range
±27.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.60 | 0.34 | 0.85 |
| 2026 | 0.60 | 0.35 | 0.85 |
| 2027 | 0.60 | 0.35 | 0.86 |
| 2028 | 0.61 | 0.36 | 0.86 |
| 2029 | 0.61 | 0.36 | 0.87 |
White-headed Woodpecker Survey Routes in California
| Chilcoot | 11 | 2024 | 1998 |
| Lumberyard | 8 | 2024 | 1976 |
| Bartle | 8 | 2021 | 1972 |
| Pilot Creek | 6 | 1996 | 1994 |
| Woodfords | 5 | 2024 | 1975 |
| Lake Hemet | 5 | 1986 | 1970 |
| Greenhorn Mt | 5 | 2008 | 1971 |
| Hat Creek | 5 | 2018 | 1973 |
| Goumaz | 5 | 2011 | 1998 |
| Cottage Spgs | 4 | 1975 | 1969 |
| Valyermo | 4 | 2019 | 1970 |
| Mccloud | 4 | 2021 | 1973 |
| Lassen Park | 3 | 1989 | 1972 |
| Fallsvale | 3 | 1981 | 1970 |
| Tuolumne Grove | 3 | 2021 | 1973 |
| Sattley | 3 | 2019 | 1975 |
| Chaos Crater | 3 | 2019 | 1993 |
| Angelus Oaks | 3 | 2017 | 1998 |
| Dirigio | 3 | 2014 | 1999 |
| Tionesta | 3 | 2021 | 1997 |
| Meadow Valley | 3 | 2023 | 1999 |
| Forest Hill | 3 | 2022 | 2004 |
| Eagle Lake | 2 | 2024 | 1969 |
| Bass Lake | 2 | 1981 | 1980 |
| Lake Hemet 2 | 2 | 2016 | 2016 |
White-headed Woodpecker Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.