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

Northern House Wren Population Trend in Oregon

All statesForest birds

Northern House Wren in Oregon has increased: up 31% on the route-weighted index since 1970.

+31%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 →
120Routes 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 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 stay roughly flat through 2029, near 3.1 (95% range 1.0–5.1). A 5-year backtest shows a typical error of ±48.6%, with 100% of held-out values landing inside the 95% band.

+8%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 →
3.1Projected 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 →
1.0–5.195% 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 →
±48.6%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 stay roughly flat through 2029, near 3.1 (95% range 1.0–5.1). A 5-year backtest shows a typical error of ±48.6%, 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 →
20253.01.005.1
20263.01.05.1
20273.01.05.1
20283.11.05.1
20293.11.05.1

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 Creek1920241984
Summit Pr1920241980
Troy1620241992
Badger Creek1520241992
Mount Vernon1420241986
Molalla1420242023
Hazel Camp1320221975
Modoc Point1020181969
Secret Val1020221975
Bly 21020242007
Madras1020241997
Derby919931968
Pendleton920241978
Lapham Res.820241991
Unity820241992
Timber720171968
Deschutes720241969
Buchanan720241977
Paisley720241973
Camp Sherman719941972
Harney Lake719961996
Lakeview720241996
Donelly 2720242018
Flora620231986

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 2026-05-22.