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

American Crow Population Trend in South Dakota

All statesGeneralists

American Crow in South Dakota has held roughly steady: up 4% on the route-weighted index since 1969.

+4%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 →
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 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 fall about 28% by 2030 — from 7.5 in 2025 to a central estimate of 5.4 (95% range 2.3–8.4). A 5-year backtest shows a typical error of ±31.5%, with 100% of held-out values landing inside the 95% band.

-28%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 →
5.4Projected 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 →
2.3–8.495% 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 →
±31.5%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 fall about 28% by 2030 — from 7.5 in 2025 to a central estimate of 5.4 (95% range 2.3–8.4). A 5-year backtest shows a typical error of ±31.5%, 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 →
20265.32.38.4
20275.32.38.4
20285.32.38.4
20295.42.38.4
20305.42.38.4

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 →
Badlands8820251982
Eagle Butte5920151999
Custer2520251967
Englewood2320211992
Ardmore2020161995
Wind Cave Np2020251999
Rosebud1820111967
Winner1520251968
Pleasant Val1520241992
Elk Mountain1520041992
Hazelrodt1520251992
Rockyford1220251967
Hill City1220131992
Lightning Cr1220251992
Wilmot1020251967
Roubaix Lk1019911967
Howard920181970
Lacreek920231994
Chamberlain820111968
Lane819991967
Silver City720121992
Norbeck620021992
Laplant519901971
Rochford520251992
Turton520232023

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 2026-08-14.