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

Wood Stork Population Trend in South Carolina

All statesGeneralists

Wood Stork in South Carolina has fallen sharply: down 64% on the route-weighted index since 1977.

-64%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 →
31YearsYears 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 64% 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 fall about 19% by 2029 — from 0.29 in 2024 to a central estimate of 0.23 (95% range 0.00–0.89). A 5-year backtest shows a typical error of ±220%, with 100% 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 →
0.23Projected 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 →
0.00–0.8995% 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 →
±220%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 fall about 19% by 2029 — from 0.29 in 2024 to a central estimate of 0.23 (95% range 0.00–0.89). A 5-year backtest shows a typical error of ±220%, with 100% of held-out values landing inside the 95% band.19742029
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 →
20250.260.000.91
20260.250.000.91
20270.240.000.90
20280.240.000.89
20290.230.000.89

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
Red Bluff320242006
Jamestown219901990
Hardeeville120241976
Rome120122006
Holly Hill120242024
Kiawah Island120241999
Wagener120172017
Dale120231998
Walterboro120051991
Nixville120061998
Green Sea120102010

Wood Stork Population Trend in Other States

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