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

Lark Sparrow Population Trend in Wisconsin

All statesGrassland birds

Lark Sparrow in Wisconsin has surged: up 120% on the route-weighted index since 1972.

+120%Since 1972
18Routes In State
39Years

Notable Lark Sparrow Trends in Wisconsin

long arc increasecomputed index

Lark Sparrow has surged in Wisconsin: up 120% on the route-weighted index since 1972.

Lark Sparrow Population Forecast in Wisconsin

If the recent trend holds, Lark Sparrow in Wisconsin is projected to stay roughly flat through 2029, near 0.10 (95% range 0.03–0.17). A 5-year backtest shows a typical error of ±55.4%, with 100% of held-out values landing inside the 95% band.

-10%Change by 2029
0.10Projected 2029 index
0.03–0.1795% range
±55.4%Backtest error
19702029
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
20250.090.030.16
20260.100.030.16
20270.100.030.17
20280.100.030.17
20290.100.030.17

Lark Sparrow Survey Routes in Wisconsin

Routes recording Lark Sparrow in Wisconsin.
Union Twp620232008
Meridean320242010
Beloit220092009
Hatfield219791970
N Freedom220241982
Princeton220141970
Fall River220242023
Prairie Du Chien220141999
Briggsville220242006
Trempealeau120182018
Minong120112011
Grand View119941994
Cadott120112006
Montreal119841984
Cumberland120132013
Oconto Falls119901972
Bashaw120232015
Buena Vista120222022

Lark Sparrow Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoidahoillinoisindianaiowakansaskentuckylouisianaminnesotamississippimissourimontananebraskanevadanew-mexiconorth-dakotaohiooklahomaoregonsouth-dakotatennesseetexasutahwashingtonwyoming

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