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

Mallard Population Trend in South Carolina

All statesWaterfowl

Mallard in South Carolina has declined: down 31% on the route-weighted index since 1979.

-31%Since 1979
19Routes In State
30Years

Notable Mallard Trends in South Carolina

No notable trend signals for Mallard in South Carolina. See the full index history below.

Mallard Population Forecast in South Carolina

If the recent trend holds, Mallard in South Carolina is projected to fall about 67% by 2029 — from 0.38 in 2024 to a central estimate of 0.13 (95% range 0.00–0.46). A 5-year backtest shows a typical error of ±62.6%, with 100% of held-out values landing inside the 95% band.

-67%Change by 2029
0.13Projected 2029 index
0.00–0.4695% range
±62.6%Backtest error
19772029
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
20250.140.000.47
20260.140.000.47
20270.130.000.47
20280.130.000.46
20290.130.000.46

Mallard Survey Routes in South Carolina

Routes recording Mallard in South Carolina.
Prosperity820241998
Wagener620181978
Campobello620232021
Owings 2520102010
Walterboro320062006
Holly Hill220092008
Little Mtn219861977
Landrum219881988
Salem220142010
Bennettsville220082000
Pinewood220092009
Adams Run220102010
Anderson220032003
Bishopville120182018
Barton Creek120111983
Plum Branch120161979
Blacksburg120132003
Joanna120042004
Cauthens Xrd120092009

Mallard Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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