BirdAnalyst
Species · Indiana · BBS 2025 Release · 1966–2024

Mallard Population Trend in Indiana

All statesWaterfowl

Mallard in Indiana has surged: up 209% on the route-weighted index since 1969.

+209%Since 1969
64Routes In State
57Years

Notable Mallard Trends in Indiana

long arc increasecomputed index

Mallard has surged in Indiana: up 209% on the route-weighted index since 1969.

Mallard Population Forecast in Indiana

If the recent trend holds, Mallard in Indiana is projected to rise about 197% by 2029 — from 0.78 in 2024 to a central estimate of 2.3 (95% range 0.31–4.3). A 5-year backtest shows a typical error of ±119.4%, with 100% of held-out values landing inside the 95% band.

+197%Change by 2029
2.3Projected 2029 index
0.31–4.395% range
±119.4%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
20252.30.254.3
20262.30.274.3
20272.30.284.3
20282.30.294.3
20292.30.314.3

Mallard Survey Routes in Indiana

Routes recording Mallard in Indiana.
Knox1820191981
Muncie1619971984
Gary1519991980
Brazil1520241980
Packertown1420041969
Middletown1220221977
Columbia Cty1020241981
Montpelier920192019
Plainfield919991999
Witts Station720052000
Ellis620221966
Fowler620191977
W Lafayette620191982
Friendswood620241990
Hebron520221967
South Bend519911966
Tipton519921979
Monticello320181981
Laporte320232000
Kankakee Sands320222000
Kewanna220171981
Galveston220221981
Wabash220231981
Pimento220221981
Spencer220061993

Mallard Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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