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

Wood Stork Population Trend in South Carolina

All statesWetland birds

Wood Stork in South Carolina has fallen sharply: down 74% on the route-weighted index since 1977.

-74%Since 1977TrendPercent 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 →
15Routes 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 →
32YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Wood Stork 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 declinecomputed 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 →

Wood Stork has fallen sharply in South Carolina: down 74% on the route-weighted index since 1977.

Wood Stork Population Forecast in South Carolina

If the recent trend holds, Wood Stork in South Carolina is projected to stay roughly flat through 2030, near 0.22 (95% range 0.00–0.87). A 5-year backtest shows a typical error of ±195.4%, with 100% of held-out values landing inside the 95% band.

+4%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 →
0.22Projected 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 →
0.00–0.8795% 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 →
±195.4%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, Wood Stork in South Carolina is projected to stay roughly flat through 2030, near 0.22 (95% range 0.00–0.87). A 5-year backtest shows a typical error of ±195.4%, with 100% of held-out values landing inside the 95% band.19742030
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 →
20260.240.000.89
20270.240.000.89
20280.230.000.88
20290.230.000.87
20300.220.000.87

Wood Stork Survey Routes in South Carolina

Routes recording Wood Stork 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 →
Olar3520112001
Johns Isle1519761974
Dillon620172017
Adams Run420221990
Walterboro420251991
Red Bluff320242006
Jamestown219901990
Hardeeville120241976
Rome120122006
Holly Hill120252024
Kiawah Island120251999
Wagener120172017
Dale120231998
Nixville120061998
Green Sea120102010

Wood Stork Population Trend in Other States

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