BirdAnalyst
Species · Wisconsin · BBS 2026 Release · 1966–2025

House Finch Population Trend in Wisconsin

All statesGeneralists

House Finch in Wisconsin has surged: up 42× on the route-weighted index since 1990.

42×Since 1990TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
90Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
37YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable House Finch Trends in WisconsinNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

House Finch has surged in Wisconsin: up 42× on the route-weighted index since 1990.

House Finch Population Forecast in Wisconsin

If the recent trend holds, House Finch in Wisconsin is projected to rise about 22% by 2030 — from 3.3 in 2025 to a central estimate of 4.0 (95% range 0.14–7.9). A 5-year backtest shows a typical error of ±15.9%, with 100% of held-out values landing inside the 95% band.

+22%Change by 2030TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
4.0Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.14–7.995% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±15.9%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, House Finch in Wisconsin is projected to rise about 22% by 2030 — from 3.3 in 2025 to a central estimate of 4.0 (95% range 0.14–7.9). A 5-year backtest shows a typical error of ±15.9%, with 100% of held-out values landing inside the 95% band.19882030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20264.00.127.9
20274.00.127.9
20284.00.137.9
20294.00.147.9
20304.00.147.9

House Finch Survey Routes in Wisconsin

Routes recording House Finch in Wisconsin.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Omro3520011991
Mukwonago 22420252005
Fall River2320251992
Paris2320251989
Mukwonago2220041998
Raymond2120251991
Pt Washingtn1920241990
Manitowoc1820241991
Eden1620251989
N Freedom1320251993
Trempealeau1220251993
Prairie Du Chien1220251998
Viroqua1120241993
Pardeeville1120251991
Verona1120251991
Hebron1020251993
Kiel1020251998
Clintonville820251989
Grimms720211998
Rib Lake620241994
Unity620251995
Saxeville620241991
Oconto Falls520231989
Casco520251994
N Andover520231995

House Finch Population Trend in Other States

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

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.