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Species · Oregon · BBS 2026 Release · 1966–2025

White-headed Woodpecker Population Trend in Oregon

All statesForest birds

White-headed Woodpecker in Oregon has surged: up 129% on the route-weighted index since 1974.

+129%Since 1974TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
37Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
46YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable White-headed Woodpecker Trends in OregonNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

White-headed Woodpecker has surged in Oregon: up 129% on the route-weighted index since 1974.

White-headed Woodpecker Population Forecast in Oregon

If the recent trend holds, White-headed Woodpecker in Oregon is projected to rise about 20% by 2030 — from 0.14 in 2025 to a central estimate of 0.17 (95% range 0.05–0.28). A 5-year backtest shows a typical error of ±27.5%, with 100% of held-out values landing inside the 95% band.

+20%Change by 2030TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
0.17Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.05–0.2895% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±27.5%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, White-headed Woodpecker in Oregon is projected to rise about 20% by 2030 — from 0.14 in 2025 to a central estimate of 0.17 (95% range 0.05–0.28). A 5-year backtest shows a typical error of ±27.5%, with 100% of held-out values landing inside the 95% band.19702030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20260.160.040.27
20270.160.050.28
20280.160.050.28
20290.170.050.28
20300.170.050.28

White-headed Woodpecker Survey Routes in Oregon

Routes recording White-headed Woodpecker in Oregon.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Wallowa320252025
Albee219761971
Lapham Res.220251996
Ochoco219751975
Modoc Point220101970
Bly 2220252007
Camp Sherman219941974
Unity220242024
Newbridge220131992
Silvies220241995
Picture Flat220142008
Sisters220251997
Donnelly220052005
Lakeview220231997
Modoc Point 2120252024
Flora120042004
Summit Pr120251982
Logdell120192019
Wickiup120031992
Wizard Falls120222002
Dell Spring119781978
Eagle Rock119741974
Barnes Val119741974
Mount Vernon120221993
Clearwater120092009

White-headed Woodpecker Population Trend in Other States

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Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.