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

Pied-billed Grebe In West Gulf Coastal Plain / Ouachitas

All regionsWest Gulf Coastal Plain / OuachitasWetland birds

Pied-billed Grebe in West Gulf Coastal Plain / Ouachitas has fallen sharply: down 62% on the route-weighted index since 1981.

-62%Since 1981
8Routes In Region
18Years

Notable Signals

long arc declinecomputed index

Pied-billed Grebe has fallen sharply in West Gulf Coastal Plain / Ouachitas: down 62% on the route-weighted index since 1981.

Forecast

If the recent trend holds, Pied-billed Grebe in West Gulf Coastal Plain / Ouachitas is projected to stay roughly flat through 2022, near 0.01 (95% range 0.00–0.07). A 5-year backtest shows a typical error of ±81.7%, with 80% of held-out values landing inside the 95% band.

n/aChange by 2022
0.01Projected 2022 index
0.00–0.0795% range
±81.7%Backtest error
19742022
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
20180.010.000.07
20190.010.000.07
20200.010.000.07
20210.010.000.07
20220.010.000.07

Routes In West Gulf Coastal Plain / Ouachitas

Routes recording Pied-billed Grebe in West Gulf Coastal Plain / Ouachitas.
New WaverlyTEXAS31981
De RidderLOUISIANA22003
CheniereLOUISIANA11989
IvanLOUISIANA12006
NatchezLOUISIANA12012
Big CedarOKLAHOMA11982
GoodwaterOKLAHOMA12017
LivingstonTEXAS11974

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