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

Lark Sparrow Population Trend in Oregon

All statesGrassland birds

Lark Sparrow in Oregon has held roughly steady: up 10% on the route-weighted index since 1970.

+10%Since 1970
73Routes In State
56Years

Notable Lark Sparrow Trends in Oregon

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

Lark Sparrow Population Forecast in Oregon

If the recent trend holds, Lark Sparrow in Oregon is projected to fall about 76% by 2029 — from 2.1 in 2024 to a central estimate of 0.52 (95% range 0.00–2.6). A 5-year backtest shows a typical error of ±93.3%, with 20% of held-out values landing inside the 95% band.

-76%Change by 2029
0.52Projected 2029 index
0.00–2.695% range
±93.3%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
20250.670.002.7
20260.630.002.7
20270.590.002.7
20280.560.002.6
20290.520.002.6

Lark Sparrow Survey Routes in Oregon

Routes recording Lark Sparrow in Oregon.
Trout Creek5720211996
Alvord Lake5620241968
Catlow Rim1920241993
Sheaville1820242012
Harney Lake1520241993
Three Forks1420242003
Madras1220241997
Adrian1020211984
Twickenham1020242010
Warner Vally1020241993
Fish Lake820241972
Umatilla820231989
Princeton719851972
Crane720241994
Crowley620241984
Donnybrook519971997
Blitzen 2420211995
Buchanan420241972
Barnes Val419721972
Mount Vernon420241986
Clover Creek420211972
Monument420231993
Imnaha320051968
Willow Spg319711969
Emigrant Lake 2320212002

Lark Sparrow Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoidahoillinoisindianaiowakansaskentuckylouisianaminnesotamississippimissourimontananebraskanevadanew-mexiconorth-dakotaohiooklahomasouth-dakotatennesseetexasutahwashingtonwisconsinwyoming

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