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

Lark Sparrow Population Trend in Idaho

All statesGrassland birds

Lark Sparrow in Idaho has edged up: up 23% on the route-weighted index since 1972.

+23%Since 1972
43Routes In State
53Years

Notable Lark Sparrow Trends in Idaho

No notable trend signals for Lark Sparrow in Idaho. See the full index history below.

Lark Sparrow Population Forecast in Idaho

If the recent trend holds, Lark Sparrow in Idaho is projected to rise about 46% by 2029 — from 1.0 in 2024 to a central estimate of 1.5 (95% range 0.14–2.8). A 5-year backtest shows a typical error of ±72.8%, with 100% of held-out values landing inside the 95% band.

+46%Change by 2029
1.5Projected 2029 index
0.14–2.895% range
±72.8%Backtest error
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 index95% low95% high
20251.40.102.7
20261.40.112.7
20271.40.122.8
20281.40.132.8
20291.50.142.8

Lark Sparrow Survey Routes in Idaho

Routes recording Lark Sparrow in Idaho.
Glenns Ferry1619861968
Triangle920241985
Cascade619831983
Crane Creek620191988
Almo620231988
Silver City520241989
Acequia420071987
Joel420221989
Pasadena Val420161987
Circular Bu320061998
Hot Spring320141988
Kyle Canyon220241985
Blacks Creek219881968
Pocatello220081984
Henry219761973
Cedar Hill220241989
Preston220181988
Mora220242022
Blackft Res120141986
Naples119931993
Gifford119911991
Twin Buttes120241989
Lost River120131998
Grangeville119861986
Baker120231978

Lark Sparrow Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoillinoisindianaiowakansaskentuckylouisianaminnesotamississippimissourimontananebraskanevadanew-mexiconorth-dakotaohiooklahomaoregonsouth-dakotatennesseetexasutahwashingtonwisconsinwyoming

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