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

Common Raven Population Trend in Oregon

All statesGeneralists

Common Raven in Oregon has surged: up 122% on the route-weighted index since 1970.

+122%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 →
143Routes 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 Common Raven 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 →

Common Raven has surged in Oregon: up 122% on the route-weighted index since 1970.

Common Raven Population Forecast in Oregon

If the recent trend holds, Common Raven in Oregon is projected to stay roughly flat through 2029, near 9.2 (95% range 6.3–12). A 5-year backtest shows a typical error of ±16.8%, with 60% of held-out values landing inside the 95% band.

+7%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 →
9.2Projected 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 →
6.3–1295% 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 →
±16.8%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, Common Raven in Oregon is projected to stay roughly flat through 2029, near 9.2 (95% range 6.3–12). A 5-year backtest shows a typical error of ±16.8%, with 60% 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 →
20258.86.012
20268.96.112
20279.06.212
20289.16.312
20299.26.312

Common Raven Survey Routes in Oregon

Routes recording Common Raven 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 →
Princeton8319851972
Malheur Res.6720232022
Madras5720241997
Fandango Can5520241977
Catlow Rim4820241993
Deschutes4020241969
Montague3920241974
Malheur Nwr3420221986
Mcminnville3420241994
Crane3320241993
Blitzen 23120241994
Mikkalo2820231997
Lone Rock2320241968
Warner Vally1920241993
Willow Spg1719711969
Green Mtn.1620241994
Eightmile1520241982
Mount Vernon1520241986
Battle Mtn1420241985
Umatilla1420231988
Harney Lake1420241993
Bowden Hills1420241999
Umpqua1320241968
Trout Creek1320211996
Sisters1220241998

Common Raven Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutgeorgiaidahokentuckymainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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