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

Grasshopper Sparrow Population Trend in South Carolina

All statesGrassland birds

Grasshopper Sparrow in South Carolina has fallen sharply: down 69% on the route-weighted index since 1968.

-69%Since 1968
24Routes In State
57Years

Notable Grasshopper Sparrow Trends in South Carolina

long arc declinecomputed index

Grasshopper Sparrow has fallen sharply in South Carolina: down 69% on the route-weighted index since 1968.

Grasshopper Sparrow Population Forecast in South Carolina

If the recent trend holds, Grasshopper Sparrow in South Carolina is projected to rise about 84% by 2029 — from 0.43 in 2024 to a central estimate of 0.79 (95% range 0.00–2.3). A 5-year backtest shows a typical error of ±300.2%, with 100% of held-out values landing inside the 95% band.

+84%Change by 2029
0.79Projected 2029 index
0.00–2.395% range
±300.2%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
20250.820.002.3
20260.810.002.3
20270.800.002.3
20280.800.002.3
20290.790.002.3

Grasshopper Sparrow Survey Routes in South Carolina

Routes recording Grasshopper Sparrow in South Carolina.
Pendleton1519761966
Campobello920242010
Owings620041992
Landrum319921972
Prosperity320061997
Chesnee320151992
Wagener219791979
Battlecreek220142000
Cauthens Xrd220081982
New Holland119921987
Dillon120211992
Little Mtn119811966
Salem Xrd120171986
Barton Creek120101967
Boiling Spgs119791967
Ward120182018
Whitmire120102010
Blacksburg120121998
Joanna120231999
Mount Pisgah119991998
Bennettsville120001998
Olar119981998
Anderson120171977
Owings 2120082005

Grasshopper Sparrow Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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