BirdAnalyst
Species · BCR 37 · BBS 2025 Release · 1966–2024

Chimney Swift In Gulf Coastal Prairie

All regionsGulf Coastal PrairieAerial insectivores

Chimney Swift in Gulf Coastal Prairie has declined: down 44% on the route-weighted index since 1969.

-44%Since 1969
44Routes In Region
57Years

Notable Signals

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

Forecast

If the recent trend holds, Chimney Swift in Gulf Coastal Prairie is projected to stay roughly flat through 2029, near 2.3 (95% range 0.00–6.3). A 5-year backtest shows a typical error of ±88.9%, with 100% of held-out values landing inside the 95% band.

+5%Change by 2029
2.3Projected 2029 index
0.00–6.395% range
±88.9%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
20252.40.006.4
20262.30.006.3
20272.30.006.3
20282.30.006.3
20292.30.006.3

Routes In Gulf Coastal Prairie

Routes recording Chimney Swift in Gulf Coastal Prairie.
LafitteLOUISIANA251991
Ville PlatteLOUISIANA152019
EstherLOUISIANA122024
Lag AtascosaTEXAS82024
VintonLOUISIANA62009
Vinton 2LOUISIANA62024
BaysideTEXAS62003
JuniorLOUISIANA51991
DanburyTEXAS52024
HackberryLOUISIANA42016
KaplanLOUISIANA42023
StowellTEXAS42010
Loyola Beach 2TEXAS42024
Bayside 2TEXAS42004
Moon Lake 2TEXAS42024
Ltl Chenier 2LOUISIANA32011
Hinkles FerTEXAS32023
Port AcresTEXAS32024
Bayside 3TEXAS32023
Gran ChenierLOUISIANA21976
MamouLOUISIANA21979
Forked IslandLOUISIANA22016
VanderbiltTEXAS21976
KatyTEXAS22023
ChinquapinTEXAS22024

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