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Species · BCR 11 · BBS 2026 Release · 1966–2025

House Finch In Prairie Potholes

All regionsPrairie PotholesGeneralists

House Finch in Prairie Potholes has surged: up 13× on the route-weighted index since 1991.

13×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 →
76Routes 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 →
36YearsYears 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 Potholes. See the full index history below.

House Finch In Prairie Potholes Population Forecast

If the recent trend holds, House Finch in Prairie Potholes is projected to fall about 12% by 2030 — from 0.65 in 2025 to a central estimate of 0.57 (95% range 0.01–1.1). A 5-year backtest shows a typical error of ±14.2%, with 100% of held-out values landing inside the 95% band.

-12%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 →
0.57Projected 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 →
0.01–1.195% 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 →
±14.2%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 Potholes is projected to fall about 12% by 2030 — from 0.65 in 2025 to a central estimate of 0.57 (95% range 0.01–1.1). A 5-year backtest shows a typical error of ±14.2%, with 100% of held-out values landing inside the 95% band.19892030
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 →
20260.560.001.1
20270.570.001.1
20280.570.001.1
20290.570.011.1
20300.570.011.1

Routes In Prairie Potholes

Routes recording House Finch in Prairie Potholes.
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 →
ArlingtonMINNESOTA82021
MccallsburgIOWA72025
Abercrombie 2NORTH-DAKOTA72016
CourtlandMINNESOTA62025
BroadlandSOUTH-DAKOTA62009
PantherIOWA52025
GlasgowMONTANA52025
WalcottNORTH-DAKOTA52023
AbercrombieNORTH-DAKOTA52012
GarnerIOWA41993
ChandlerMINNESOTA42021
MaynardMINNESOTA42015
WashingtonIOWA32025
WylieMINNESOTA32023
FairmontMINNESOTA32025
Big StoneMINNESOTA32008
HarlemMONTANA32007
Great FallsMONTANA32025
MadisonNEBRASKA32025
NashNORTH-DAKOTA32004
HowardSOUTH-DAKOTA32025
VolgaSOUTH-DAKOTA32021
ClareIOWA22019
TitonkaIOWA22004
HartlandMINNESOTA22015

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