BirdAnalyst
Species · BCR 10 · BBS 2025 Release · 1966–2024

House Finch In Northern Rockies

All regionsNorthern RockiesGeneralists

House Finch in Northern Rockies has surged: up 312% on the route-weighted index since 1970.

+312%Since 1970TrendPercent 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 →
125Routes 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 →
56YearsYears 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 →

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 Northern Rockies: up 312% on the route-weighted index since 1970.

Forecast

If the recent trend holds, House Finch in Northern Rockies is projected to fall about 12% by 2029 — from 0.85 in 2024 to a central estimate of 0.75 (95% range 0.00–2.7). A 5-year backtest shows a typical error of ±20.6%, with 100% of held-out values landing inside the 95% band.

-12%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 →
0.75Projected 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 →
0.00–2.795% 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 →
±20.6%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 Northern Rockies is projected to fall about 12% by 2029 — from 0.85 in 2024 to a central estimate of 0.75 (95% range 0.00–2.7). A 5-year backtest shows a typical error of ±20.6%, 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 →
20250.770.002.7
20260.770.002.7
20270.760.002.7
20280.760.002.7
20290.750.002.7

Routes In Northern Rockies

Routes recording House Finch in Northern Rockies.
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 →
VictorMONTANA202024
CascadeIDAHO121980
Church HillMONTANA122024
Clover CreekOREGON122024
KalispellMONTANA112024
BridgeportOREGON112022
Wise RiverMONTANA102018
Spring LakeWASHINGTON91994
Pagil GulchMONTANA72022
BasinWYOMING72024
Willow Creek 2MONTANA62024
Clyde ParkMONTANA62024
MooseWYOMING61989
Carter 2WYOMING62022
GlenMONTANA52017
ChewelahWASHINGTON52021
Soda LakeWYOMING52021
Painted RockMONTANA41994
Threemile WaMONTANA42024
UnityOREGON42023
NewbridgeOREGON42015
DonnybrookOREGON41997
RandolphUTAH42024
CodyWYOMING42024
LovellWYOMING42024

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