BirdAnalyst
Species · South Dakota · BBS 2025 Release · 1966–2024

Chimney Swift Population Trend in South Dakota

All statesAerial insectivores

Chimney Swift in South Dakota has increased: up 48% on the route-weighted index since 1970.

+48%Since 1970
13Routes In State
46Years

Notable Chimney Swift Trends in South Dakota

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

Chimney Swift Population Forecast in South Dakota

If the recent trend holds, Chimney Swift in South Dakota is projected to fall about 55% by 2029 — from 0.18 in 2024 to a central estimate of 0.08 (95% range 0.00–0.34). A 5-year backtest shows a typical error of ±59.7%, with 100% of held-out values landing inside the 95% band.

-55%Change by 2029
0.08Projected 2029 index
0.00–0.3495% range
±59.7%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
20250.090.000.35
20260.090.000.35
20270.090.000.35
20280.080.000.34
20290.080.000.34

Chimney Swift Survey Routes in South Dakota

Routes recording Chimney Swift in South Dakota.
White Lake420001978
Broadland320011972
Forbes320242024
Tripp220161986
Crow Creek220112011
Veblen220192004
Lennox120171969
Howard120091971
Geddes120121988
Volga120181979
Roswell119981998
Wilmot120241967
Britton119831983

Chimney Swift Population Trend in Other States

alabamaarkansascoloradoconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvermontvirginiawest-virginiawisconsinwyoming

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