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

House Finch Population Trend in Vermont

All statesGeneralists

House Finch in Vermont has risen sharply: up 66% on the route-weighted index since 1983.

+66%Since 1983TrendPercent 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 →
23Routes 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 →
43YearsYears 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 VermontNotable 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 risen sharply in Vermont: up 66% on the route-weighted index since 1983.

House Finch Population Forecast in Vermont

If the recent trend holds, House Finch in Vermont is projected to fall about 100% by 2029 — from 0.56 in 2024 to a central estimate of 0.00 (95% range 0.00–3.7). A 5-year backtest shows a typical error of ±62.6%, 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 →
0.00–3.795% 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 →
±62.6%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 Vermont is projected to fall about 100% by 2029 — from 0.56 in 2024 to a central estimate of 0.00 (95% range 0.00–3.7). A 5-year backtest shows a typical error of ±62.6%, with 100% of held-out values landing inside the 95% band.19812029
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 →
20250.270.004.0
20260.190.003.9
20270.110.003.8
20280.040.003.7
20290.000.003.7

House Finch Survey Routes in Vermont

Routes recording House Finch in Vermont.
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 →
Hinesburg1519941986
Marlboro620241987
S Reading319951982
Gaysville320171985
Bristol320181995
North Pownal220221981
Stratton219971986
Post Mills220211982
Shaftsbury220241986
Northfld Fls220171987
Fletcher219991987
Landgrove120221987
S Wallingfrd120191981
W Rutland120211986
St Johnsbury120221988
East Haven120221990
Middlesex119941982
East Calais119971991
Hardwick120131991
Greensboro120032001
Colchester120241987
Grand Isle120151987
Stowe120241991

House Finch Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvirginiawashingtonwest-virginiawisconsinwyoming

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