BirdAnalyst
Species · BCR 25 · BBS 2025 Release · 1966–2024

Swainson's Warbler In West Gulf Coastal Plain / Ouachitas

All regionsWest Gulf Coastal Plain / OuachitasForest birds

Swainson's Warbler in West Gulf Coastal Plain / Ouachitas has surged: up 748% on the route-weighted index since 1970.

+748%Since 1970
65Routes In Region
52Years

Notable Signals

long arc increasecomputed index

Swainson's Warbler has surged in West Gulf Coastal Plain / Ouachitas: up 748% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Swainson's Warbler in West Gulf Coastal Plain / Ouachitas is projected to fall about 32% by 2029 — from 1.3 in 2024 to a central estimate of 0.85 (95% range 0.42–1.3). A 5-year backtest shows a typical error of ±45.8%, with 20% of held-out values landing inside the 95% band.

-32%Change by 2029
0.85Projected 2029 index
0.42–1.395% range
±45.8%Backtest error
19682029
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
20250.790.361.2
20260.810.381.2
20270.820.391.3
20280.840.411.3
20290.850.421.3

Routes In West Gulf Coastal Plain / Ouachitas

Routes recording Swainson's Warbler in West Gulf Coastal Plain / Ouachitas.
Lake CoveLOUISIANA82017
TroutLOUISIANA62024
HargisLOUISIANA62010
GoodwillLOUISIANA52024
GraysonLOUISIANA52021
DibollTEXAS52024
FredTEXAS52024
Big Sandy BithTEXAS52024
LongstreetLOUISIANA42021
Flat CreekLOUISIANA42024
WomackLOUISIANA42024
Burr FerryLOUISIANA42024
ClayLOUISIANA32024
Mount UnionLOUISIANA32023
EnterpriseLOUISIANA32024
Town BluffTEXAS32024
AthensTEXAS32023
Bon WierTEXAS32024
De RidderLOUISIANA22019
LinvilleLOUISIANA22023
EvelynLOUISIANA22024
EastonTEXAS21994
Lance Rosier BithTEXAS22019
Old MiloARKANSAS12024
RamseyARKANSAS11994

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