BirdAnalyst
Species · BCR 26 · BBS 2025 Release · 1966–2024

Pied-billed Grebe In Mississippi Alluvial Valley

All regionsMississippi Alluvial ValleyWetland birds

Pied-billed Grebe in Mississippi Alluvial Valley has edged up: up 10% on the route-weighted index since 1975.

+10%Since 1975
20Routes In Region
37Years

Notable Signals

No notable trend signals for Pied-billed Grebe in Mississippi Alluvial Valley. See the full index history below.

Forecast

If the recent trend holds, Pied-billed Grebe in Mississippi Alluvial Valley is projected to rise about 36% by 2029 — from 0.09 in 2024 to a central estimate of 0.12 (95% range 0.00–0.28). A 5-year backtest shows a typical error of ±113.6%, with 100% of held-out values landing inside the 95% band.

+36%Change by 2029
0.12Projected 2029 index
0.00–0.2895% range
±113.6%Backtest error
19692029
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
20250.120.000.28
20260.120.000.28
20270.120.000.28
20280.120.000.28
20290.120.000.28

Routes In Mississippi Alluvial Valley

Routes recording Pied-billed Grebe in Mississippi Alluvial Valley.
South BendARKANSAS52023
KeystoneLOUISIANA42008
ShawLOUISIANA42014
DelhiLOUISIANA22019
DundeeMISSISSIPPI21973
TallahatchieMISSISSIPPI22024
HughesARKANSAS11997
HarrisburgARKANSAS12000
MaynardARKANSAS12003
RamahLOUISIANA12008
Port AllenLOUISIANA12013
Tensas NwrLOUISIANA12019
AtchafalayaLOUISIANA12001
Baton RougeLOUISIANA12021
IsolaMISSISSIPPI12008
WintervilleMISSISSIPPI12009
MoonMISSISSIPPI12014
Dahomey NwrMISSISSIPPI12024
TiptonvilleTENNESSEE11977
Pawpaw 2TENNESSEE12014

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