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Species · Oregon · BBS 2025 Release · 1966–2024

Red-naped Sapsucker Population Trend in Oregon

All statesForest birds

Red-naped Sapsucker in Oregon has surged: up 113% on the route-weighted index since 1972.

+113%Since 1972TrendPercent 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 →
44Routes 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 →
49YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Red-naped Sapsucker 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 →

Red-naped Sapsucker has surged in Oregon: up 113% on the route-weighted index since 1972.

Red-naped Sapsucker Population Forecast in Oregon

If the recent trend holds, Red-naped Sapsucker in Oregon is projected to rise about 29% by 2029 — from 0.13 in 2024 to a central estimate of 0.17 (95% range 0.00–0.43). A 5-year backtest shows a typical error of ±165.3%, with 100% of held-out values landing inside the 95% band.

+29%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 →
0.17Projected 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 →
0.00–0.4395% 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 →
±165.3%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, Red-naped Sapsucker in Oregon is projected to rise about 29% by 2029 — from 0.13 in 2024 to a central estimate of 0.17 (95% range 0.00–0.43). A 5-year backtest shows a typical error of ±165.3%, 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 →
20250.170.000.44
20260.170.000.44
20270.170.000.44
20280.170.000.43
20290.170.000.43

Red-naped Sapsucker Survey Routes in Oregon

Routes recording Red-naped Sapsucker 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 →
Granite620071987
Flora520051986
Bly519951995
Barnes Val419841984
Desolation419981993
Lapham Res.320041991
Wickiup320221972
Dell Spring319901986
Elk Lake320011975
Donelly 2320242019
Joseph220221991
Silver Creek220211990
Newbridge220241992
Black Mtn.220041993
Donnelly219951994
Albee120131971
Summit Pr120241984
Zumwalt120021995
Ochoco119791974
Logdell120221986
Bridgeport120172003
Winberry119681968
Paisley120081973
Alvord Lake120092009
Eagle Rock119741974

Red-naped Sapsucker Population Trend in Other States

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