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

Yellow-crowned Night Heron Population Trend in South Carolina

All statesWetland birds

Yellow-crowned Night Heron in South Carolina has edged down: down 10% on the route-weighted index since 1975.

-10%Since 1975
11Routes In State
26Years

Notable Yellow-crowned Night Heron Trends in South Carolina

No notable trend signals for Yellow-crowned Night Heron in South Carolina. See the full index history below.

Yellow-crowned Night Heron Population Forecast in South Carolina

If the recent trend holds, Yellow-crowned Night Heron in South Carolina is projected to fall about 26% by 2029 — from 0.14 in 2024 to a central estimate of 0.11 (95% range 0.00–0.28). A 5-year backtest shows a typical error of ±35.4%, with 100% of held-out values landing inside the 95% band.

-26%Change by 2029
0.11Projected 2029 index
0.00–0.2895% range
±35.4%Backtest error
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 index95% low95% high
20250.100.000.28
20260.100.000.28
20270.100.000.28
20280.110.000.28
20290.110.000.28

Yellow-crowned Night Heron Survey Routes in South Carolina

Routes recording Yellow-crowned Night Heron in South Carolina.
Holly Hill220241993
Adams Run220192006
Pinewood220081999
Johns Isle119751966
Jamestown119961988
Hardeeville120241990
Foreston119911991
Kiawah Island120221999
Dillon120182018
Nixville120032003
Dale120232010

Yellow-crowned Night Heron Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianakansaskentuckylouisianamarylandmississippimissourinew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniatennesseetexasvirginiawest-virginia

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