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

House Finch Population Trend in Indiana

All statesGeneralists

House Finch in Indiana has surged: up 998% on the route-weighted index since 1988.

+998%Since 1988TrendPercent 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 →
68Routes 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 →
39YearsYears 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 IndianaNotable 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 Indiana: up 998% on the route-weighted index since 1988.

House Finch Population Forecast in Indiana

If the recent trend holds, House Finch in Indiana is projected to fall about 16% by 2030 — from 6.6 in 2025 to a central estimate of 5.5 (95% range 0.01–11). A 5-year backtest shows a typical error of ±24.8%, with 100% of held-out values landing inside the 95% band.

-16%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 →
5.5Projected 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 →
0.01–1195% 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 →
±24.8%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 Indiana is projected to fall about 16% by 2030 — from 6.6 in 2025 to a central estimate of 5.5 (95% range 0.01–11). A 5-year backtest shows a typical error of ±24.8%, with 100% of held-out values landing inside the 95% band.19852030
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 →
20265.60.0811
20275.60.0711
20285.60.0511
20295.50.0311
20305.50.0111

House Finch Survey Routes in Indiana

Routes recording House Finch in Indiana.
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 →
Plainfield3619991999
South Bend2719911989
Evansville2720191988
Portage 22520252005
Maplewood2320212000
Knox1920251989
Brookville1920251989
Witts Station1920252000
Packertown1720041990
Tipton1619921988
Monticello1420251987
New Brunswick1420252024
Laporte1420241999
Anderson1420252000
Kewanna1220221989
Muncie1219971988
Decatur1220251999
Friendswood1120241988
Hebron1020251989
Galveston1020251988
Jamestown1020251991
Spencer920241989
Celestine920251989
New Phila920251988
Lagrange920251999

House Finch Population Trend in Other States

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

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