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

Chimney Swift Population Trend in Indiana

All statesAerial insectivores

Chimney Swift in Indiana has declined: down 48% on the route-weighted index since 1968.

-48%Since 1968
69Routes In State
58Years

Notable Chimney Swift Trends in Indiana

No notable trend signals for Chimney Swift in Indiana. See the full index history below.

Chimney Swift Population Forecast in Indiana

If the recent trend holds, Chimney Swift in Indiana is projected to rise about 40% by 2029 — from 4.1 in 2024 to a central estimate of 5.7 (95% range 0.00–12). A 5-year backtest shows a typical error of ±61.5%, with 100% of held-out values landing inside the 95% band.

+40%Change by 2029
5.7Projected 2029 index
0.00–1295% range
±61.5%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
20256.20.0013
20266.10.0013
20276.00.0012
20285.90.0012
20295.70.0012

Chimney Swift Survey Routes in Indiana

Routes recording Chimney Swift in Indiana.
Gary6019991980
Indian Spgs1920241982
Plainfield1719991999
Muncie1619971981
Packertown1520041967
Maplewood1520212000
Anderson1520242000
Middletown1420241966
Evansville1420191966
Wallace1320241999
Jamestown1120241986
Monticello1020241981
Wabash1020241981
Brookville920241966
Washington920241987
Witts Station920242000
Celestine820241979
Cross Plains820241999
South Bend719901966
Thorntown720241982
Spencer720241967
Packertown 2720242005
Knox620231981
Sexton620241981
New Phila620241982

Chimney Swift 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.