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

Chimney Swift Population Trend in Tennessee

All statesAerial insectivores

Chimney Swift in Tennessee has fallen sharply: down 74% on the route-weighted index since 1968.

-74%Since 1968
55Routes In State
58Years

Notable Chimney Swift Trends in Tennessee

long arc declinecomputed index

Chimney Swift has fallen sharply in Tennessee: down 74% on the route-weighted index since 1968.

Chimney Swift Population Forecast in Tennessee

If the recent trend holds, Chimney Swift in Tennessee is projected to fall about 24% by 2029 — from 3.9 in 2024 to a central estimate of 3.0 (95% range 0.00–7.6). A 5-year backtest shows a typical error of ±40.9%, with 100% of held-out values landing inside the 95% band.

-24%Change by 2029
3.0Projected 2029 index
0.00–7.695% range
±40.9%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
20254.00.008.6
20263.70.008.3
20273.50.008.1
20283.20.007.8
20293.00.007.6

Chimney Swift Survey Routes in Tennessee

Routes recording Chimney Swift in Tennessee.
Climer5220041967
Corryton Rd4420191966
Red Bank2219781966
Soddy2019811967
Walland1519891966
Collinwood1220241966
Glen1120241966
Lovell1020191966
Belotes Bend920181966
Jefferson Cty920111966
Newfound Gap820241990
Silerton720241966
Jasper720241967
Oliver Spgs720221966
Pawpaw 2620222017
Pond Creek520241966
Indian Mound519981966
Cornpone520241990
Jones Gap520191982
Indian Mound 2520232004
Mansfield420241966
Humboldt420241966
Campbellsville420171966
Peytonsville420241966
Mt Olive420241966

Chimney Swift Population Trend in Other States

alabamaarkansascoloradoconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatexasvermontvirginiawest-virginiawisconsinwyoming

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