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

Downy Woodpecker Population Trend in Oregon

All statesForest birds

Downy Woodpecker in Oregon has edged up: up 11% on the route-weighted index since 1970.

+11%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 →
86Routes 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 Downy 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 →

No notable trend signals for Downy Woodpecker in Oregon. See the full index history below.

Downy Woodpecker Population Forecast in Oregon

If the recent trend holds, Downy Woodpecker in Oregon is projected to fall about 31% by 2029 — from 0.51 in 2024 to a central estimate of 0.35 (95% range 0.14–0.55). A 5-year backtest shows a typical error of ±24.9%, with 100% of held-out values landing inside the 95% band.

-31%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 →
0.35Projected 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 →
0.14–0.5595% 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 →
±24.9%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, Downy Woodpecker in Oregon is projected to fall about 31% by 2029 — from 0.51 in 2024 to a central estimate of 0.35 (95% range 0.14–0.55). A 5-year backtest shows a typical error of ±24.9%, 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 →
20250.350.140.55
20260.350.140.55
20270.350.140.55
20280.350.140.55
20290.350.140.55

Downy Woodpecker Survey Routes in Oregon

Routes recording Downy 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 →
Hash Rock720241989
Svensen519921991
Green520231994
Salem520241994
Wedderburn420241970
Days Creek320241972
Emigrant Lake 2320242002
Coquille320221995
Mcminnville320241996
Lorane320231995
Tualatin220241969
Wickiup220181987
Dell Spring219891989
Joseph220191981
Sparta219991976
Silver Creek219901990
Hazel Camp220221977
Secret Val220221976
Emigrant Lk220011980
Nicolai Mtn.220241993
Howard Mdws.219941992
Newbridge220242024
Eagle Creek220212006
Sisters220241998
Selma220241997

Downy Woodpecker Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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