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

Pileated Woodpecker Population Trend in Oregon

All statesForest birds

Pileated Woodpecker in Oregon has surged: up 83% on the route-weighted index since 1970.

+83%Since 1970TrendPercent 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 →
94Routes 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 →
56YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Pileated 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 →

Pileated Woodpecker has surged in Oregon: up 83% on the route-weighted index since 1970.

Pileated Woodpecker Population Forecast in Oregon

If the recent trend holds, Pileated Woodpecker in Oregon is projected to rise about 30% by 2029 — from 0.66 in 2024 to a central estimate of 0.85 (95% range 0.48–1.2). A 5-year backtest shows a typical error of ±31.7%, with 100% of held-out values landing inside the 95% band.

+30%Change by 2029TrendPercent 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 →
0.85Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.48–1.295% 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 →
±31.7%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, Pileated Woodpecker in Oregon is projected to rise about 30% by 2029 — from 0.66 in 2024 to a central estimate of 0.85 (95% range 0.48–1.2). A 5-year backtest shows a typical error of ±31.7%, with 100% of held-out values landing inside the 95% band.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 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 →
20250.820.451.2
20260.830.461.2
20270.840.461.2
20280.840.471.2
20290.850.481.2

Pileated Woodpecker Survey Routes in Oregon

Routes recording Pileated 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 →
Black Mtn.620041994
Klickitat Mt519961993
Camp Sherman419941979
Hells Canyon420211992
Newbridge420241993
Selma420241993
Secret Val320101977
Sams Valley320241993
Wizard Falls320241998
Trask Summit320241992
Howard Mdws.320241992
Unity320231993
Ruch320161992
Whiskey Spg.320221992
Desolation320071993
Lorane320241993
Cinderella320211993
Lakeview320242007
Timber220171972
Tualatin220151973
Shellrock220181968
Albee220241975
Flora220231986
Hauser219851971
Days Creek220241973

Pileated Woodpecker Population Trend in Other States

alabamaarkansascaliforniaconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawashingtonwest-virginiawisconsin

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