BirdAnalyst
Species · South Dakota · BBS 2025 Release · 1966–2024

American Crow Population Trend in South Dakota

All statesGeneralists

American Crow in South Dakota has edged down: down 19% on the route-weighted index since 1969.

-19%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 →
62Routes 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 American Crow Trends in South 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 South Dakota. See the full index history below.

American Crow Population Forecast in South Dakota

If the recent trend holds, American Crow in South Dakota is projected to rise about 42% by 2029 — from 3.6 in 2024 to a central estimate of 5.2 (95% range 2.2–8.2). A 5-year backtest shows a typical error of ±36.7%, with 100% 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 →
5.2Projected 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 →
2.2–8.295% 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 →
±36.7%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 South Dakota is projected to rise about 42% by 2029 — from 3.6 in 2024 to a central estimate of 5.2 (95% range 2.2–8.2). A 5-year backtest shows a typical error of ±36.7%, with 100% 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 →
20255.12.18.2
20265.12.18.2
20275.22.18.2
20285.22.18.2
20295.22.28.2

American Crow Survey Routes in South Dakota

Routes recording American Crow in South 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 →
Eagle Butte5920151999
Rockyford4720231967
Custer2420241967
Badlands2420231982
Englewood2320211992
Ardmore2020161995
Rosebud1820111967
Pleasant Val1520241992
Elk Mountain1520041992
Winner1220241968
Hill City1220131992
Wind Cave Np1120241999
Roubaix Lk1019911967
Howard920181970
Lacreek920231994
Chamberlain820111968
Lane819991967
Rochford720181992
Silver City720121992
Harding620171967
Norbeck620021992
Hazelrodt620241992
Wilmot520241967
Laplant519901971
Lightning Cr520221992

American Crow Population Trend in Other States

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

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