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

Purple Martin In West Gulf Coastal Plain / Ouachitas

All regionsWest Gulf Coastal Plain / OuachitasAerial insectivores

Purple Martin in West Gulf Coastal Plain / Ouachitas has fallen sharply: down 61% on the route-weighted index since 1969.

-61%Since 1969
105Routes In Region
57Years

Notable Signals

long arc declinecomputed index

Purple Martin has fallen sharply in West Gulf Coastal Plain / Ouachitas: down 61% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Purple Martin in West Gulf Coastal Plain / Ouachitas is projected to fall about 39% by 2029 — from 8.8 in 2024 to a central estimate of 5.4 (95% range 0.00–14). A 5-year backtest shows a typical error of ±44%, with 100% of held-out values landing inside the 95% band.

-39%Change by 2029
5.4Projected 2029 index
0.00–1495% range
±44%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
20256.40.0015
20266.20.0015
20275.90.0014
20285.60.0014
20295.40.0014

Routes In West Gulf Coastal Plain / Ouachitas

Routes recording Purple Martin in West Gulf Coastal Plain / Ouachitas.
CypressLOUISIANA1371987
NatchitochesLOUISIANA1081991
LinvilleLOUISIANA652024
MarionLOUISIANA621996
EastonLOUISIANA591990
ManyLOUISIANA561992
LongstreetLOUISIANA532024
DibollTEXAS512024
ChandlerTEXAS512004
CartervilleLOUISIANA371992
IndianolaOKLAHOMA322024
Pine PrairieLOUISIANA311997
DerryLOUISIANA301989
Lake CoveLOUISIANA292018
Alexander StTEXAS282024
Fort PolkLOUISIANA271975
MassardARKANSAS262021
PhillipsOKLAHOMA262008
Town BluffTEXAS252010
WomackLOUISIANA232024
GoodwaterOKLAHOMA202021
MortonTEXAS202024
WechesTEXAS202024
SmyrnaTEXAS202010
Ivan 2LOUISIANA192016

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