BirdAnalyst
Species · Oregon · BBS 2026 Release · 1966–2025

Northern House Wren Population Trend in Oregon

All statesForest birds

Northern House Wren in Oregon has edged up: up 25% on the route-weighted index since 1970.

+25%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 →
122Routes 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 →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Northern House Wren 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 Northern House Wren in Oregon. See the full index history below.

Northern House Wren Population Forecast in Oregon

If the recent trend holds, Northern House Wren in Oregon is projected to rise about 53% by 2030 — from 1.9 in 2025 to a central estimate of 3.0 (95% range 0.95–5.0). A 5-year backtest shows a typical error of ±61.9%, with 100% of held-out values landing inside the 95% band.

+53%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 →
3.0Projected 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 →
0.95–5.095% 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 →
±61.9%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, Northern House Wren in Oregon is projected to rise about 53% by 2030 — from 1.9 in 2025 to a central estimate of 3.0 (95% range 0.95–5.0). A 5-year backtest shows a typical error of ±61.9%, with 100% of held-out values landing inside the 95% band.19682030
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 →
20263.00.935.0
20273.00.935.0
20283.00.945.0
20293.00.955.0
20303.00.955.0

Northern House Wren Survey Routes in Oregon

Routes recording Northern House Wren 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 →
Barnes Val5419871972
Silver Creek2420251984
Mount Vernon1420241986
Hazel Camp1320221975
Modoc Point1020181969
Summit Pr1020251980
Derby919931968
Troy920251992
Sisters920251997
Pendleton820251978
Clover Creek820251974
Bly 2820252007
Badger Creek820251992
Timber720171968
Paisley720241973
Camp Sherman719941972
Unity720251992
Harney Lake719961996
Monument720251993
Donelly 2720252018
Flora620231986
Secret Val620251975
Lapham Res.620251991
Ruch620231992
Donnelly620061994

Northern House Wren Population Trend in Other States

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

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