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

American Crow Population Trend in Oregon

All statesGeneralists

American Crow in Oregon has edged down: down 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 →
106Routes 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 American Crow 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 American Crow in Oregon. See the full index history below.

American Crow Population Forecast in Oregon

If the recent trend holds, American Crow in Oregon is projected to rise about 14% by 2029 — from 6.7 in 2024 to a central estimate of 7.6 (95% range 4.7–10). A 5-year backtest shows a typical error of ±13.1%, with 100% of held-out values landing inside the 95% band.

+14%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 →
7.6Projected 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 →
4.7–1095% 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 →
±13.1%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, American Crow in Oregon is projected to rise about 14% by 2029 — from 6.7 in 2024 to a central estimate of 7.6 (95% range 4.7–10). A 5-year backtest shows a typical error of ±13.1%, 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 →
20257.74.911
20267.74.911
20277.64.810
20287.64.810
20297.64.710

American Crow Survey Routes in Oregon

Routes recording American Crow 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 →
Tualatin8220241968
Imnaha7020241968
Umatilla7020231988
Fish Lake5620241972
Glasgow4920241986
Catlow Rim4720241993
Elkton3720241972
Madras3020232023
Hauser2919851970
Sandy River2920061993
Wedderburn2820241972
Emigrant Lk2720011972
Garfield2520231973
Emigrant Lake 22220242002
Canby2220241993
Ordnance2019791971
Hazel Camp1920221975
Salem1920241993
Svensen1719921990
Coquille1720241994
Umpqua1420241968
Timber1320171968
Trout Creek1320211996
Winberry1120231968
Alvord Lake1120241968

American Crow 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.