BirdAnalyst
Species · BCR 24 · BBS 2025 Release · 1966–2024

Chimney Swift In Central Hardwoods

All regionsCentral HardwoodsAerial insectivores

Chimney Swift in Central Hardwoods has collapsed: down 83% on the route-weighted index since 1968.

-83%Since 1968
162Routes In Region
58Years

Notable Signals

long arc declinecomputed index

Chimney Swift has collapsed in Central Hardwoods: down 83% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Chimney Swift in Central Hardwoods is projected to fall about 73% by 2029 — from 2.6 in 2024 to a central estimate of 0.70 (95% range 0.00–4.9). A 5-year backtest shows a typical error of ±18.4%, with 100% of held-out values landing inside the 95% band.

-73%Change by 2029
0.70Projected 2029 index
0.00–4.995% range
±18.4%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
20252.00.006.2
20261.70.005.9
20271.30.005.6
20281.00.005.2
20290.700.004.9

Routes In Central Hardwoods

Routes recording Chimney Swift in Central Hardwoods.
FarwellARKANSAS932018
MillionKENTUCKY501986
Cole CampMISSOURI441990
LeveeKENTUCKY301982
Daniel BooneKENTUCKY261988
GoshenKENTUCKY241999
Indian SpgsINDIANA192024
BoxvilleKENTUCKY191983
Buena VistaKENTUCKY192017
GlencoeKENTUCKY172018
SyracuseMISSOURI172023
Iron BridgeKENTUCKY161998
GraydonMISSOURI152022
EvansvilleINDIANA142019
DixieKENTUCKY122019
DixonKENTUCKY122022
CollinwoodTENNESSEE122024
GlenTENNESSEE112024
Valhermoso SpgsALABAMA102010
EastviewKENTUCKY102024
Levee 2KENTUCKY102019
RiverqueenKENTUCKY102024
HillsboroALABAMA91996
Ravenden SpringsARKANSAS92015
WashingtonINDIANA92024

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