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

Fish Crow Population Trend in South Carolina

All statesGeneralists

Fish Crow in South Carolina has surged: up 221% on the route-weighted index since 1968.

+221%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 →
45Routes 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 Fish 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 →

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 →

Fish Crow has surged in South Carolina: up 220% on the route-weighted index since 1968.

Fish Crow Population Forecast in South Carolina

If the recent trend holds, Fish Crow in South Carolina is projected to rise about 27% by 2030 — from 4.0 in 2025 to a central estimate of 5.1 (95% range 0.00–10). A 5-year backtest shows a typical error of ±54.3%, with 100% of held-out values landing inside the 95% band.

+27%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 →
5.1Projected 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 →
0.00–1095% 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 →
±54.3%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, Fish Crow in South Carolina is projected to rise about 27% by 2030 — from 4.0 in 2025 to a central estimate of 5.1 (95% range 0.00–10). A 5-year backtest shows a typical error of ±54.3%, with 100% of held-out values landing inside the 95% band.19662030
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 →
20265.10.0010
20275.10.0010
20285.10.0010
20295.10.0010
20305.10.0010

Fish Crow Survey Routes in South Carolina

Routes recording Fish 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 →
Green Sea1820252010
Carvers Bay1520121998
Rome1020251984
Bishopville820251979
Greenwood820251998
Coward720251984
Nixville720251998
Nixonville619951987
Ridgeway620212010
Bennettsville620171998
Battlecreek620242007
Owings 2620252014
Red Bluff620251996
Foreston520211973
Walterboro520251971
New Holland420251967
Joanna420251999
Prosperity420241992
Jamestown320141968
Wagener320251967
Plum Branch320251977
New Ellenton320252010
Campobello320252015
Mount Pisgah320081998
Olar320191998

Fish Crow Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmississippimissourinew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandtennesseetexasvermontvirginiawest-virginia

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