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

Anhinga In West Gulf Coastal Plain / Ouachitas

All regionsWest Gulf Coastal Plain / OuachitasGeneralists

Anhinga in West Gulf Coastal Plain / Ouachitas has fallen sharply: down 73% on the route-weighted index since 1969.

-73%Since 1969
30Routes In Region
54Years

Notable Signals

long arc declinecomputed index

Anhinga has fallen sharply in West Gulf Coastal Plain / Ouachitas: down 73% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Anhinga in West Gulf Coastal Plain / Ouachitas is projected to rise about 25% by 2029 — from 0.06 in 2024 to a central estimate of 0.07 (95% range 0.00–0.24). A 5-year backtest shows a typical error of ±33.8%, with 80% of held-out values landing inside the 95% band.

+25%Change by 2029
0.07Projected 2029 index
0.00–0.2495% range
±33.8%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
20250.080.000.24
20260.080.000.24
20270.080.000.24
20280.070.000.24
20290.070.000.24

Routes In West Gulf Coastal Plain / Ouachitas

Routes recording Anhinga in West Gulf Coastal Plain / Ouachitas.
FillmoreLOUISIANA91987
GoodwaterOKLAHOMA72021
GoodwillLOUISIANA42016
HopeARKANSAS32000
EnterpriseLOUISIANA32019
Fishville 2LOUISIANA22019
NatchitochesLOUISIANA21989
EvelynLOUISIANA22022
New WaverlyTEXAS21980
CrossroadsTEXAS21978
Alexander StTEXAS22021
DerryLOUISIANA11973
CypressLOUISIANA11987
Mer RougeLOUISIANA12005
Flat CreekLOUISIANA12008
Mount UnionLOUISIANA12022
WomackLOUISIANA12009
Derry 2LOUISIANA12024
HaughtonLOUISIANA12014
Pine PrairieLOUISIANA11995
NatchezLOUISIANA12024
Lake CoveLOUISIANA12012
Town BluffTEXAS12024
LivingstonTEXAS11977
DibollTEXAS11990

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