BirdAnalyst
Species · North Dakota · BBS 2026 Release · 1966–2025

American Crow Population Trend in North Dakota

All statesGeneralists

American Crow in North Dakota has declined: down 44% on the route-weighted index since 1969.

-44%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 →
50Routes 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 American Crow Trends in North DakotaNotable 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 North Dakota. See the full index history below.

American Crow Population Forecast in North Dakota

If the recent trend holds, American Crow in North Dakota is projected to rise about 121% by 2030 — from 3.9 in 2025 to a central estimate of 8.5 (95% range 0.82–16). A 5-year backtest shows a typical error of ±172.4%, with 100% of held-out values landing inside the 95% band.

+121%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 →
8.5Projected 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 →
0.82–1695% 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 →
±172.4%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, American Crow in North Dakota is projected to rise about 121% by 2030 — from 3.9 in 2025 to a central estimate of 8.5 (95% range 0.82–16). A 5-year backtest shows a typical error of ±172.4%, 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 →
20268.60.8816
20278.60.8616
20288.60.8516
20298.50.8316
20308.50.8216

American Crow Survey Routes in North Dakota

Routes recording American Crow in North Dakota.
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 →
Turtle Mtns3920251980
Emerado3520251973
Kempton3220171967
Nash2620171980
Abercrombie2020121967
Roosevelt Pk1820191982
Bowesmont 21520162015
Sydney919831967
Stanley920251967
Abercrombie 2720172013
Webster620211989
Tobacco620191968
Gorham620251968
Walcott520231967
Carpio520231967
Cooperstown420251969
Loraine420191983
Horsehead Lk320021989
Bowesmont320141968
Rolla320241969
Lark319811968
Braddock320161988
Solen320152005
Danzig220131988
Wimbledon220211991

American Crow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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