BirdAnalyst
Species · BCR 23 · BBS 2025 Release · 1966–2024

Chimney Swift In Prairie Hardwood Transition

All regionsPrairie Hardwood TransitionAerial insectivores

Chimney Swift in Prairie Hardwood Transition has declined: down 47% on the route-weighted index since 1968.

-47%Since 1968
157Routes In Region
58Years

Notable Signals

No notable trend signals for Chimney Swift in Prairie Hardwood Transition. See the full index history below.

Forecast

If the recent trend holds, Chimney Swift in Prairie Hardwood Transition is projected to rise about 34% by 2029 — from 2.4 in 2024 to a central estimate of 3.2 (95% range 1.2–5.3). A 5-year backtest shows a typical error of ±47.9%, with 100% of held-out values landing inside the 95% band.

+34%Change by 2029
3.2Projected 2029 index
1.2–5.395% range
±47.9%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
20253.41.45.4
20263.41.45.4
20273.31.35.3
20283.31.35.3
20293.21.25.3

Routes In Prairie Hardwood Transition

Routes recording Chimney Swift in Prairie Hardwood Transition.
HamtramckMICHIGAN351984
BismarkOHIO281995
NapoleonOHIO202024
OmroWISCONSIN162001
PackertownINDIANA152004
KielWISCONSIN152022
Stevens PtWISCONSIN142013
ManitowocWISCONSIN132023
N FreedomWISCONSIN122024
New TroyMICHIGAN112024
Pt WashingtnWISCONSIN112024
MontereyMICHIGAN102024
GraytownOHIO101984
CochraneWISCONSIN102024
GrimmsWISCONSIN102021
Caledonia 2MINNESOTA92021
VickeryOHIO92023
WeyerhauserWISCONSIN92024
BeldingMICHIGAN82003
HomerMICHIGAN82021
StratfordWISCONSIN82024
Fall RiverWISCONSIN82024
GreshamWISCONSIN82024
MukwonagoWISCONSIN82004
Mukwonago 2WISCONSIN82024

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