BirdAnalyst
Species · South Dakota · BBS 2025 Release · 1966–2024

Eared Grebe Population Trend in South Dakota

All statesWetland birds

Eared Grebe in South Dakota has surged: up 24× on the route-weighted index since 1971.

24×Since 1971
15Routes In State
49Years

Notable Eared Grebe Trends in South Dakota

long arc increasecomputed index

Eared Grebe has surged in South Dakota: up 24× on the route-weighted index since 1971.

Eared Grebe Population Forecast in South Dakota

If the recent trend holds, Eared Grebe in South Dakota is projected to fall about 58% by 2029 — from 1.9 in 2024 to a central estimate of 0.78 (95% range 0.00–2.4). A 5-year backtest shows a typical error of ±424.2%, with 100% of held-out values landing inside the 95% band.

-58%Change by 2029
0.78Projected 2029 index
0.00–2.495% range
±424.2%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
20250.760.002.4
20260.770.002.4
20270.770.002.4
20280.770.002.4
20290.780.002.4

Eared Grebe Survey Routes in South Dakota

Routes recording Eared Grebe in South Dakota.
Cottonwood2720241992
S. Pioneer1420241995
White Lake520111967
Volga419911985
Harding319861977
Pioneer219931993
Ardmore219941978
Britton220021980
Cedar Pass119881967
Maurine120082008
Geddes119681968
Lodgepole120141997
White River120112009
Conde119841984
Long Lake120191971

Eared Grebe Population Trend in Other States

arizonacaliforniacoloradoidahoiowakansasminnesotamontananebraskanevadanew-mexiconorth-dakotaoklahomaoregontexasutahwashingtonwyoming

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