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

House Finch Population Trend in Idaho

All statesGeneralists

House Finch in Idaho has edged down: down 19% on the route-weighted index since 1971.

-19%Since 1971TrendPercent 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 →
47Routes 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 →
55YearsYears 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 IdahoNotable 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 Idaho. See the full index history below.

House Finch Population Forecast in Idaho

If the recent trend holds, House Finch in Idaho is projected to rise about 258% by 2029 — from 0.64 in 2024 to a central estimate of 2.3 (95% range 0.00–4.9). A 5-year backtest shows a typical error of ±100.2%, with 100% of held-out values landing inside the 95% band.

+258%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 →
2.3Projected 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 →
0.00–4.995% 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 →
±100.2%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 Idaho is projected to rise about 258% by 2029 — from 0.64 in 2024 to a central estimate of 2.3 (95% range 0.00–4.9). A 5-year backtest shows a typical error of ±100.2%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20252.30.004.9
20262.30.004.9
20272.30.004.9
20282.30.004.9
20292.30.004.9

House Finch Survey Routes in Idaho

Routes recording House Finch in Idaho.
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 →
Pocatello4820191979
Ririe3020231971
Iron Springs2520102010
Picabo1320211993
Cascade1219801977
Cedar Hill1120241994
Mud Lake820231996
Pasadena Val520151987
Gifford420171971
Leadore420131976
Dubois419751972
Glenns Ferry419861985
Centerville319961996
Acequia320051979
Henry319831973
Coolin320221995
Preston320231989
Mora320192019
Blackft Res220161986
Naples220231972
Springfield220181969
Triangle220241988
Sawtooth City 2220192016
Joel220241991
Almo220222022

House Finch Population Trend in Other States

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

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