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

House Sparrow Population Trend in Louisiana

All statesGeneralists

House Sparrow in Louisiana has collapsed: down 86% on the route-weighted index since 1969.

-86%Since 1969
88Routes In State
57Years

Notable House Sparrow Trends in Louisiana

long arc declinecomputed index

House Sparrow has collapsed in Louisiana: down 86% on the route-weighted index since 1969.

House Sparrow Population Forecast in Louisiana

If the recent trend holds, House Sparrow in Louisiana is projected to fall about 100% by 2029 — from 7.5 in 2024 to a central estimate of 0.00 (95% range 0.00–19). A 5-year backtest shows a typical error of ±150.7%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–1995% range
±150.7%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
20250.000.0019
20260.000.0019
20270.000.0019
20280.000.0019
20290.000.0019

House Sparrow Survey Routes in Louisiana

Routes recording House Sparrow in Louisiana.
Mamou9719821967
Creole8319871967
Carlisle5919881968
Morgan City5519861967
Keystone5420131967
Kraemer5120241997
Natchitoches4019911987
Gran Chenier3819821967
Baton Rouge3820241995
Gonzales3620191998
Easton3519901967
Brousville3520241998
Forked Island 23420112010
Mayflower3020241967
Lafitte2919911967
Ville Platte2820191988
Cypress2219871967
Larose2119921988
Junior1919911987
Greensburg1920221988
Many1819921989
Forked Island1820242008
Roseland1620241967
Floyd1420211988
Gibson1420191999

House Sparrow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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