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

Lark Sparrow Population Trend in Louisiana

All statesGrassland birds

Lark Sparrow in Louisiana has fallen sharply: down 74% on the route-weighted index since 1969.

-74%Since 1969
22Routes In State
49Years

Notable Lark Sparrow Trends in Louisiana

long arc declinecomputed index

Lark Sparrow has fallen sharply in Louisiana: down 74% on the route-weighted index since 1969.

Lark Sparrow Population Forecast in Louisiana

If the recent trend holds, Lark Sparrow in Louisiana is projected to fall about 100% by 2029 — from 0.07 in 2024 to a central estimate of 0.00 (95% range 0.00–0.28). A 5-year backtest shows a typical error of ±180.8%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–0.2895% range
±180.8%Backtest error
19672029
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
20250.000.000.28
20260.000.000.28
20270.000.000.28
20280.000.000.28
20290.000.000.28

Lark Sparrow Survey Routes in Louisiana

Routes recording Lark Sparrow in Louisiana.
Fillmore419701970
Linville219991998
Many219901990
Ivan120132013
De Ridder120151969
Derry119891973
Cypress119711971
Fort Polk119751967
Chatham119711971
Clay119831972
Longstreet120231967
Floyd120102007
Marion119901990
Evelyn120242022
Frogmore120242024
Transylvania120221998
Mount Union120222000
Womack120081999
Ivan 2120162016
Derry 2119911991
Rayville 2120242024
Cheniere119961985

Lark Sparrow Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoidahoillinoisindianaiowakansaskentuckyminnesotamississippimissourimontananebraskanevadanew-mexiconorth-dakotaohiooklahomaoregonsouth-dakotatennesseetexasutahwashingtonwisconsinwyoming

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