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

Field Sparrow Population Trend in Indiana

All statesGeneralists

Field Sparrow in Indiana has fallen sharply: down 55% on the route-weighted index since 1968.

-55%Since 1968
69Routes In State
58Years

Notable Field Sparrow Trends in Indiana

long arc declinecomputed index

Field Sparrow has fallen sharply in Indiana: down 55% on the route-weighted index since 1968.

Field Sparrow Population Forecast in Indiana

If the recent trend holds, Field Sparrow in Indiana is projected to fall about 40% by 2029 — from 9.3 in 2024 to a central estimate of 5.6 (95% range 0.60–11). A 5-year backtest shows a typical error of ±36.7%, with 100% of held-out values landing inside the 95% band.

-40%Change by 2029
5.6Projected 2029 index
0.60–1195% range
±36.7%Backtest error
19662029
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
20256.31.311
20266.11.211
20275.90.9711
20285.80.7911
20295.60.6011

Field Sparrow Survey Routes in Indiana

Routes recording Field Sparrow in Indiana.
New Castle4520242002
Ellis3820241966
Kankakee Sands2120242000
Thorntown1920241982
Spencer1820241967
Sexton1720241981
Vevay1620241966
Knox1520241981
Newberry1520241999
Wallace1420241999
Jamestown1320241986
Indian Spgs1320241982
Packertown1220041967
Brookville1220241966
Celestine1220241979
New Phila1220241982
Scottsburg1220241982
Georgia1220241999
Pimento1120241981
Clear Spring1120241981
W Lafayette1020241981
Shelbyville1020241983
Montpelier1020242018
Wabash920241981
Brazil920241966

Field Sparrow Population Trend in Other States

alabamaarkansascoloradoconnecticutdelawarefloridageorgiaillinoisiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsinwyoming

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