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

Lark Sparrow Population Trend in Wyoming

All statesGrassland birds

Lark Sparrow in Wyoming has held roughly steady: down 3% on the route-weighted index since 1970.

-3%Since 1970
113Routes In State
56Years

Notable Lark Sparrow Trends in Wyoming

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

Lark Sparrow Population Forecast in Wyoming

If the recent trend holds, Lark Sparrow in Wyoming is projected to stay roughly flat through 2029, near 3.9 (95% range 1.7–6.1). A 5-year backtest shows a typical error of ±37.4%, with 100% of held-out values landing inside the 95% band.

-8%Change by 2029
3.9Projected 2029 index
1.7–6.195% range
±37.4%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
20253.91.76.0
20263.91.76.0
20273.91.76.1
20283.91.76.1
20293.91.76.1

Lark Sparrow Survey Routes in Wyoming

Routes recording Lark Sparrow in Wyoming.
Lysite4720241989
Newcastle4520091990
Tensleep3220241995
Gebo2320241980
Arvada2220241982
Schoonover2120241982
Seely2020001990
Redbird1719891968
Sybille Cyn1520241997
Basin1420241971
Highlight1320071980
Chugwater1320241979
Bucknum1220241996
Nowood1120241993
Lovell1120241989
Worland1120241992
Wamsutter1019951995
Seely 2920242001
Hampshire920241994
Patrick Draw 4920021992
Meadowdale820171983
Welch820191978
Otto720241970
Dubois720241987
Yoder720241968

Lark Sparrow Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoidahoillinoisindianaiowakansaskentuckylouisianaminnesotamississippimissourimontananebraskanevadanew-mexiconorth-dakotaohiooklahomaoregonsouth-dakotatennesseetexasutahwashingtonwisconsin

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