BirdAnalyst
Species · BCR 5 · BBS 2025 Release · 1966–2024

Williamson's Sapsucker In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestForest birds

Williamson's Sapsucker in Northern Pacific Rainforest has declined: down 34% on the route-weighted index since 1976.

-34%Since 1976
5Routes In Region
18Years

Notable Signals

No notable trend signals for Williamson's Sapsucker in Northern Pacific Rainforest. See the full index history below.

Forecast

If the recent trend holds, Williamson's Sapsucker in Northern Pacific Rainforest is projected to stay roughly flat through 2021, near 0.02 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±68.2%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2021
0.02Projected 2021 index
0.00–0.1095% range
±68.2%Backtest error
19742021
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20170.020.000.10
20180.020.000.10
20190.020.000.10
20200.020.000.10
20210.020.000.10

Routes In Northern Pacific Rainforest

Routes recording Williamson's Sapsucker in Northern Pacific Rainforest.
ShellrockOREGON32015
Emigrant LkOREGON21980
Mt ShastaCALIFORNIA12012
WhiskeytownCALIFORNIA12006
Elk LakeOREGON12016

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.