Species · Washington · BBS 2025 Release · 1966–2024
Black-backed Woodpecker Population Trend in Washington
Black-backed Woodpecker in Washington has declined: down 38% on the route-weighted index since 1971.
-38%Since 1971
17Routes In State
27Years
Notable Black-backed Woodpecker Trends in Washington
No notable trend signals for Black-backed Woodpecker in Washington. See the full index history below.
Black-backed Woodpecker Population Forecast in Washington
If the recent trend holds, Black-backed Woodpecker in Washington is projected to fall about 77% by 2029 — from 0.10 in 2024 to a central estimate of 0.02 (95% range 0.00–0.09). A 5-year backtest shows a typical error of ±74.3%, with 40% of held-out values landing inside the 95% band.
-77%Change by 2029
0.02Projected 2029 index
0.00–0.0995% range
±74.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.03 | 0.00 | 0.09 |
| 2026 | 0.03 | 0.00 | 0.09 |
| 2027 | 0.03 | 0.00 | 0.09 |
| 2028 | 0.03 | 0.00 | 0.09 |
| 2029 | 0.02 | 0.00 | 0.09 |
Black-backed Woodpecker Survey Routes in Washington
| E. Mt. Adams | 4 | 2018 | 1999 |
| Ellensburg | 3 | 2024 | 2023 |
| Blewett Pass | 3 | 2023 | 2005 |
| Spring Lake | 2 | 1990 | 1982 |
| Mt St Helens | 2 | 1998 | 1998 |
| Cusick | 1 | 2018 | 1990 |
| Ronald | 1 | 2024 | 2024 |
| Leavenworth | 1 | 2005 | 2005 |
| Omak Creek | 1 | 2024 | 2009 |
| Keller | 1 | 1980 | 1969 |
| Deer Park | 1 | 2011 | 2010 |
| L Pend O Nwr | 1 | 2024 | 2016 |
| Mt. Adams | 1 | 2015 | 2015 |
| Lake Chelan | 1 | 2012 | 2001 |
| Rimrock | 1 | 2021 | 1968 |
| Curlew | 1 | 2013 | 2013 |
| Cloverland | 1 | 2006 | 2006 |
Black-backed Woodpecker Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.