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Species · BCR 23 · BBS 2026 Release · 1966–2025

House Finch In Prairie Hardwood Transition

All regionsPrairie Hardwood TransitionGeneralists

House Finch in Prairie Hardwood Transition has surged: up 336× on the route-weighted index since 1985.

336×Since 1985TrendPercent 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 →
156Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
42YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

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

No notable trend signals for House Finch in Prairie Hardwood Transition. See the full index history below.

House Finch In Prairie Hardwood Transition Population Forecast

If the recent trend holds, House Finch in Prairie Hardwood Transition is projected to rise about 24% by 2030 — from 6.2 in 2025 to a central estimate of 7.7 (95% range 0.00–15). A 5-year backtest shows a typical error of ±24.2%, with 100% of held-out values landing inside the 95% band.

+24%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 →
7.7Projected 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 →
0.00–1595% 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 →
±24.2%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 Prairie Hardwood Transition is projected to rise about 24% by 2030 — from 6.2 in 2025 to a central estimate of 7.7 (95% range 0.00–15). A 5-year backtest shows a typical error of ±24.2%, with 100% of held-out values landing inside the 95% band.19832030
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 →
20267.50.0015
20277.50.0015
20287.60.0015
20297.60.0015
20307.70.0015

Routes In Prairie Hardwood Transition

Routes recording House Finch in Prairie Hardwood Transition.
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 →
BismarkOHIO1081995
St CharlesMICHIGAN392019
OmroWISCONSIN352001
North BranchMICHIGAN301999
CohoctahMICHIGAN302025
South BendINDIANA271991
Belding 2MICHIGAN252025
Mukwonago 2WISCONSIN242025
New TroyMICHIGAN232024
GalesburgMICHIGAN232025
Fall RiverWISCONSIN232025
ParisWISCONSIN232025
MukwonagoWISCONSIN222004
HowardsvilleMICHIGAN212025
BeldingMICHIGAN202003
AdairMICHIGAN201995
KnoxINDIANA192025
Pt WashingtnWISCONSIN192024
HoltMICHIGAN182025
RichmondMICHIGAN182024
ManitowocWISCONSIN182024
PackertownINDIANA172004
New BuffaloMICHIGAN172014
EdenWISCONSIN162025
LaporteINDIANA142024

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