BirdAnalyst
Species · Alabama · BBS 2025 Release · 1966–2024

Pied-billed Grebe Population Trend in Alabama

All statesWetland birds

Pied-billed Grebe in Alabama has fallen sharply: down 60% on the route-weighted index since 1972.

-60%Since 1972
12Routes In State
23Years

Notable Pied-billed Grebe Trends in Alabama

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

Pied-billed Grebe Population Forecast in Alabama

If the recent trend holds, Pied-billed Grebe in Alabama is projected to stay roughly flat through 2027, near 0.01 (95% range 0.00–0.05). A 5-year backtest shows a typical error of ±50.8%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2027
0.01Projected 2027 index
0.00–0.0595% range
±50.8%Backtest error
19682027
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
20230.010.000.06
20240.010.000.06
20250.010.000.05
20260.010.000.05
20270.010.000.05

Pied-billed Grebe Survey Routes in Alabama

Routes recording Pied-billed Grebe in Alabama.
Summitt419751975
Valhermoso Spgs220001971
Dauphin Is219781968
Kymulga220042001
Rock Chapel220212010
Castleberry120121971
Pine Grove119961996
Alabama Pt119751975
Wheeler Dam120221994
Fairview119901990
Greensboro119971985
Holt120072007

Pied-billed Grebe Population Trend in Other States

alaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwisconsinwyoming

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