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

Brown Creeper Population Trend in Oregon

All statesForest birds

Brown Creeper in Oregon has increased: up 30% on the route-weighted index since 1970.

+30%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 →
95Routes 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 Brown Creeper 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 Brown Creeper in Oregon. See the full index history below.

Brown Creeper Population Forecast in Oregon

If the recent trend holds, Brown Creeper in Oregon is projected to stay roughly flat through 2029, near 1.1 (95% range 0.62–1.6). A 5-year backtest shows a typical error of ±23.5%, with 100% of held-out values landing inside the 95% band.

+3%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 →
1.1Projected 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 →
0.62–1.695% 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 →
±23.5%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, Brown Creeper in Oregon is projected to stay roughly flat through 2029, near 1.1 (95% range 0.62–1.6). A 5-year backtest shows a typical error of ±23.5%, 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 →
20251.00.581.5
20261.10.591.5
20271.10.601.5
20281.10.611.5
20291.10.621.6

Brown Creeper Survey Routes in Oregon

Routes recording Brown Creeper 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 Val1319871972
Myrtle Grove820241993
Clearwater720211991
Shellrock620231969
Winberry620231969
Ruch620231997
Whiskey Spg.620151993
Silvies620242004
Harlan620082006
Fisher620101997
Mount Vernon520242016
Elkton520241972
Nicolai Mtn.520241995
Cinderella520241993
Sandy River520061993
Adair420231974
Garfield420231987
Mt Hood420231986
Glasgow420241995
Davis Lake420232006
Wizard Falls420241998
Klickitat Mt419951993
Selma420241994
Scappoose420232010
Eagle Rock319771976

Brown Creeper Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutidahoillinoisindianaiowamainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiopennsylvaniarhode-islandsouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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