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

Generalists In South Carolina

All statesSouth Carolina

52 species in this guild. As a group they are -59%Guild trendA mean-index aggregate across the species in this group — the structural direction of the guild, with individual-species noise smoothed out.Full methodology → since 1968.

Guild SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

guild collapsecomputed 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 →

Generalists as a group have fallen sharply in South Carolina, down 59% since 1968.

Generalists In South Carolina Population Forecast

If the recent trend holds, Generalists in South Carolina is projected to fall about 24% by 2029 — from 5.4 in 2024 to a central estimate of 4.1 (95% range 2.5–5.7). A 5-year backtest shows a typical error of ±12.3%, with 100% of held-out values landing inside the 95% band.

-24%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 →
4.1Projected 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 →
2.5–5.795% 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 →
±12.3%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, Generalists in South Carolina is projected to fall about 24% by 2029 — from 5.4 in 2024 to a central estimate of 4.1 (95% range 2.5–5.7). A 5-year backtest shows a typical error of ±12.3%, with 100% 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 →
20254.63.06.3
20264.52.96.1
20274.42.76.0
20284.22.65.8
20294.12.55.7

Member Species In South Carolina

Generalists species in South Carolina.
TrendPercent 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 →
House SparrowPasseridae-96%
European StarlingSturnidae-94%
Red-winged BlackbirdIcteridae-94%
Field SparrowPasserellidae-90%
Common GrackleIcteridae-86%
Loggerhead ShrikeLaniidae-85%
Gray CatbirdMimidae-74%
Rock PigeonColumbidae-70%
Common Ground DoveColumbidae-66%
Ruby-throated HummingbirdTrochilidae-65%
Bachman's SparrowPasserellidae-65%
Wood StorkCiconiidae-64%
Orchard OrioleIcteridae-64%
Broad-winged HawkAccipitridae-63%
Boat-tailed GrackleIcteridae-62%
Eastern TowheePasserellidae-60%
Belted KingfisherAlcedinidae-54%
Eastern Screech-OwlStrigidae-53%
Northern MockingbirdMimidae-48%
Yellow-breasted ChatIcteriidae-47%
Brown ThrasherMimidae-46%
Indigo BuntingCardinalidae-42%
Blue JayCorvidae-41%
Cooper's HawkAccipitridae-37%
Barred OwlStrigidae-29%
Painted BuntingCardinalidae-24%
Yellow-billed CuckooCuculidae-23%
Northern CardinalCardinalidae-21%
American KestrelFalconidae-17%
Summer TanagerCardinalidae-4%
Blue GrosbeakCardinalidae-4%
Red-tailed HawkAccipitridae+6%
Great Horned OwlStrigidae+6%
Mourning DoveColumbidae+8%
Song SparrowPasserellidae+12%
American CrowCorvidae+33%
Cedar WaxwingBombycillidae+39%
Chipping SparrowPasserellidae+48%
Swallow-tailed KiteAccipitridae+72%
Scarlet TanagerCardinalidae+102%
AnhingaAnhingidae+128%
Red-shouldered HawkAccipitridae+147%
Fish CrowCorvidae+200%
Black VultureCathartidae+340%
OspreyPandionidae+456%
Turkey VultureCathartidae+528%
Brown-headed CowbirdIcteridae+565%
Eurasian Collared-DoveColumbidae+643%
Wild TurkeyPhasianidae+756%
House FinchFringillidae+988%
Mississippi KiteAccipitridae15×
American GoldfinchFringillidae22×

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