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

Common Raven Population Trend in Minnesota

All statesGeneralists

Common Raven in Minnesota has surged: up 687% on the route-weighted index since 1969.

+687%Since 1969TrendPercent 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 →
51Routes 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 →
58YearsYears 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 MinnesotaNotable 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 Minnesota: up 687% on the route-weighted index since 1969.

Common Raven Population Forecast in Minnesota

If the recent trend holds, Common Raven in Minnesota is projected to rise about 10% by 2030 — from 2.7 in 2025 to a central estimate of 2.9 (95% range 2.0–3.8). A 5-year backtest shows a typical error of ±14.4%, with 100% of held-out values landing inside the 95% band.

+10%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 →
2.9Projected 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 →
2.0–3.895% 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 →
±14.4%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 Minnesota is projected to rise about 10% by 2030 — from 2.7 in 2025 to a central estimate of 2.9 (95% range 2.0–3.8). A 5-year backtest shows a typical error of ±14.4%, with 100% of held-out values landing inside the 95% band.19672030
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 →
20262.81.93.7
20272.81.93.7
20282.92.03.8
20292.92.03.8
20302.92.03.8

Common Raven Survey Routes in Minnesota

Routes recording Common Raven in Minnesota.
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 →
Lude2020251979
Lake Bronson1820111979
Nebish1620251983
Floodwood1620251979
Island Lake1320171971
Glendale1120251993
Crane Lake920251969
Chisholm920242019
Oklee820211992
Hovland720251973
Little Fork720241969
Waskish720251981
Tamarac Nwr620241991
Cromwell620251969
Hart Lake620251967
Sherry Lake520221969
Brook Park520252006
Mahtowa520231993
Sawbill Camp520251993
Warroad520251993
Evergreen420252015
Cohasset420221983
Debs420251981
Beltrami420162016
Mcgregor420251993

Common Raven Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutgeorgiaidahokentuckymainemarylandmassachusettsmichiganmontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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