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

Common Raven Population Trend in Minnesota

All statesGeneralists

Common Raven in Minnesota has surged: up 724% on the route-weighted index since 1969.

+724%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 →
57YearsYears 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 724% 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 42% by 2029 — from 2.1 in 2024 to a central estimate of 2.9 (95% range 2.0–3.8). A 5-year backtest shows a typical error of ±20.8%, with 80% of held-out values landing inside the 95% band.

+42%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 →
2.9Projected 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 →
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 →
±20.8%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 Minnesota is projected to rise about 42% by 2029 — from 2.1 in 2024 to a central estimate of 2.9 (95% range 2.0–3.8). A 5-year backtest shows a typical error of ±20.8%, with 80% of held-out values landing inside the 95% band.19672029
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 →
20252.81.83.7
20262.81.93.7
20272.81.93.7
20282.92.03.8
20292.92.03.8

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 →
Lake Bronson1820111979
Lude1520231979
Island Lake1320171971
Glendale1220241993
Nebish1120231983
Chisholm920242019
Oklee820211992
Little Fork720241969
Tamarac Nwr620241991
Hovland620241973
Evergreen520242015
Hart Lake520241967
Floodwood520241979
Sherry Lake520221969
Debs520241981
Waskish520241981
Mahtowa520231993
Sawbill Camp520241993
Warroad520241993
Pine River420241968
Cohasset420221983
Beltrami420162016
Mcgregor420241993
Brainerd420242008
Bigfork420241993

Common Raven Population Trend in Other States

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