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

American Crow Population Trend in South Carolina

All statesGeneralists

American Crow in South Carolina has increased: up 33% on the route-weighted index since 1968.

+33%Since 1968TrendPercent 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 American Crow Trends in South CarolinaNotable 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 Carolina. See the full index history below.

American Crow Population Forecast in South Carolina

If the recent trend holds, American Crow in South Carolina is projected to rise about 19% by 2029 — from 38 in 2024 to a central estimate of 45 (95% range 36–55). A 5-year backtest shows a typical error of ±27.3%, with 20% of held-out values landing inside the 95% band.

+19%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 →
45Projected 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 →
36–5595% 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 →
±27.3%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 Carolina is projected to rise about 19% by 2029 — from 38 in 2024 to a central estimate of 45 (95% range 36–55). A 5-year backtest shows a typical error of ±27.3%, with 20% of held-out values landing inside the 95% band.19662029
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 →
2025443553
2026443554
2027453654
2028453654
2029453655

American Crow Survey Routes in South Carolina

Routes recording American Crow in South Carolina.
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 →
Barton Creek12820221967
Walterboro7220171970
Plum Branch6820241977
Campobello6620242010
New Holland6520241967
Dillon6420211970
Adams Run6120241988
Salem Xrd5820191982
Kingstree5720102010
Blacksburg5720131998
Landrum5619921972
Chesnee5320151992
New Ellenton5220242010
Nixville5120211998
Green Sea4820242010
Salem4820242010
Sandhills4720241994
Ridgeway4320212010
Prosperity4320241992
Rome4020241967
Battlecreek4020241999
Ward3620212017
Lowrys3620212017
Olar3520191998
Foreston3220211966

American Crow Population Trend in Other States

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

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