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Species · Idaho · BBS 2025 Release · 1966–2024

Lesser Goldfinch Population Trend in Idaho

All statesGeneralists

Lesser Goldfinch in Idaho has surged: up 105% on the route-weighted index since 2007.

+105%Since 2007
7Routes In State
18Years

Notable Lesser Goldfinch Trends in Idaho

long arc increasecomputed index

Lesser Goldfinch has surged in Idaho: up 105% on the route-weighted index since 2007.

Lesser Goldfinch Population Forecast in Idaho

If the recent trend holds, Lesser Goldfinch in Idaho is projected to rise about 181% by 2029 — from 0.20 in 2024 to a central estimate of 0.56 (95% range 0.00–1.3). A 5-year backtest shows a typical error of ±861.3%, with 40% of held-out values landing inside the 95% band.

+181%Change by 2029
0.56Projected 2029 index
0.00–1.395% range
±861.3%Backtest error
19982029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.510.001.3
20260.520.001.3
20270.530.001.3
20280.550.001.3
20290.560.001.3

Lesser Goldfinch Survey Routes in Idaho

Routes recording Lesser Goldfinch in Idaho.
Gifford5020172006
Pocatello720192019
Joel420242010
Dougal Res220112007
Cedar Hill119981998
Circular Bu120232023
Magic Mtn120242016

Lesser Goldfinch Population Trend in Other States

arizonacaliforniacoloradonevadanew-mexicooregontexasutahwashingtonwyoming

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