BirdAnalyst
Species · BCR 12 · BBS 2025 Release · 1966–2024

House Finch In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionGeneralists

House Finch in Boreal Hardwood Transition has declined: down 42% on the route-weighted index since 1991.

-42%Since 1991TrendPercent 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 →
74Routes 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 →
35YearsYears 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 Boreal Hardwood Transition. See the full index history below.

House Finch In Boreal Hardwood Transition Population Forecast

If the recent trend holds, House Finch in Boreal Hardwood Transition is projected to fall about 100% by 2029 — from 0.12 in 2024 to a central estimate of 0.00 (95% range 0.00–0.68). A 5-year backtest shows a typical error of ±199.8%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029TrendPercent 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 →
0.00Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.6895% 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 →
±199.8%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 Boreal Hardwood Transition is projected to fall about 100% by 2029 — from 0.12 in 2024 to a central estimate of 0.00 (95% range 0.00–0.68). A 5-year backtest shows a typical error of ±199.8%, with 100% of held-out values landing inside the 95% band.19892029
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 →
20250.030.000.71
20260.010.000.69
20270.000.000.68
20280.000.000.68
20290.000.000.68

Routes In Boreal Hardwood Transition

Routes recording House Finch in Boreal 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 →
Skegemog PtMICHIGAN82014
Traverse CtyMICHIGAN81992
Cedar RunMICHIGAN71999
Rib LakeWISCONSIN62024
CathroMICHIGAN51994
IshpemingMICHIGAN41994
Pine RiverMINNESOTA42003
WausaukeeWISCONSIN42001
Washington IWISCONSIN42018
GilchristMICHIGAN31996
IronsMICHIGAN31989
FredericMICHIGAN32001
Mille LacsMINNESOTA31997
WilsonMICHIGAN21999
Bear LakeMICHIGAN22022
Pleasant ValMICHIGAN21997
Walloon LakeMICHIGAN21993
SkeelsMICHIGAN22011
Pleasant Valley 2MICHIGAN22023
Frederic 2MICHIGAN22009
McgregorMINNESOTA22018
IrmaWISCONSIN22015
Popple RiverWISCONSIN21998
HollisterWISCONSIN22019
MellenWISCONSIN22009

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