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

House Sparrow Population Trend in Wisconsin

All statesGeneralists

House Sparrow in Wisconsin has fallen sharply: down 73% on the route-weighted index since 1968.

-73%Since 1968
93Routes In State
58Years

Notable House Sparrow Trends in Wisconsin

long arc declinecomputed index

House Sparrow has fallen sharply in Wisconsin: down 73% on the route-weighted index since 1968.

House Sparrow Population Forecast in Wisconsin

If the recent trend holds, House Sparrow in Wisconsin is projected to fall about 39% by 2029 — from 25 in 2024 to a central estimate of 15 (95% range 0.00–37). A 5-year backtest shows a typical error of ±15.1%, with 100% of held-out values landing inside the 95% band.

-39%Change by 2029
15Projected 2029 index
0.00–3795% range
±15.1%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
2025210.0043
2026190.0041
2027180.0040
2028170.0038
2029150.0037

House Sparrow Survey Routes in Wisconsin

Routes recording House Sparrow in Wisconsin.
Grimms14820211998
Eden13420241966
Kiel12420221998
Stratford12020241966
Omro10520011966
Verona9420241991
N Andover9120241967
Pardeeville8520241967
Raymond7920241966
Holland7620241998
Hazel Green7520241966
Paris7120241966
Prairie Du Chien7120241998
Trempealeau6820241966
Holway6619891967
Mukwonago6320041998
Beloit5920241998
Esdaile5520241966
Annaton5120241998
Gresham4920241998
Gilmanton4620241966
Brownsville4620241966
Cadott4320241966
Rolling Pr4220241966
Manitowoc4020241966

House Sparrow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawyoming

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