BirdAnalyst
Species · Oregon · BBS 2025 Release · 1966–2024

Williamson's Sapsucker Population Trend in Oregon

All statesForest birds

Williamson's Sapsucker in Oregon has surged: up 314% on the route-weighted index since 1971.

+314%Since 1971
44Routes In State
54Years

Notable Williamson's Sapsucker Trends in Oregon

long arc increasecomputed index

Williamson's Sapsucker has surged in Oregon: up 314% on the route-weighted index since 1971.

Williamson's Sapsucker Population Forecast in Oregon

If the recent trend holds, Williamson's Sapsucker in Oregon is projected to stay roughly flat through 2029, near 0.63 (95% range 0.27–0.98). A 5-year backtest shows a typical error of ±17.6%, with 100% of held-out values landing inside the 95% band.

+4%Change by 2029
0.63Projected 2029 index
0.27–0.9895% range
±17.6%Backtest error
19682029
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
20250.600.240.96
20260.610.250.96
20270.610.260.97
20280.620.260.98
20290.630.270.98

Williamson's Sapsucker Survey Routes in Oregon

Routes recording Williamson's Sapsucker in Oregon.
Barnes Val1119871984
Ochoco919821975
Hash Rock920241983
Silvies820241994
Barnhouse720241998
Silver Creek620241984
Sisters620241998
Donelly 2520242018
Desolation520071993
Lakeview520241996
Logdell420221987
Wizard Falls420181999
Mount Vernon420241986
Shellrock320152014
Albee320231975
Summit Pr220141984
Emigrant Lk219801980
Badger Creek220232005
Unity220001993
Eagle Creek220211994
Davis Lake220242000
Flora120231986
Lapham Res.119951995
Wickiup120191987
Dell Spring119991968

Williamson's Sapsucker Population Trend in Other States

arizonacaliforniacoloradoidahomontananevadanew-mexicoutahwashingtonwyoming

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