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

Western Grebe Population Trend in North Dakota

All statesWetland birds

Western Grebe in North Dakota has surged: up 149% on the route-weighted index since 1988.

+149%Since 1988
22Routes In State
34Years

Notable Western Grebe Trends in North Dakota

long arc increasecomputed index

Western Grebe has surged in North Dakota: up 149% on the route-weighted index since 1988.

Western Grebe Population Forecast in North Dakota

If the recent trend holds, Western Grebe in North Dakota is projected to rise about 626% by 2029 — from 0.52 in 2024 to a central estimate of 3.8 (95% range 0.00–8.1). A 5-year backtest shows a typical error of ±207%, with 80% of held-out values landing inside the 95% band.

+626%Change by 2029
3.8Projected 2029 index
0.00–8.195% range
±207%Backtest error
19862029
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
20253.50.007.8
20263.60.007.9
20273.60.008.0
20283.70.008.0
20293.80.008.1

Western Grebe Survey Routes in North Dakota

Routes recording Western Grebe in North Dakota.
Lakota1220051997
Braddock1020221988
Douglas Crk720191987
Lake George520141997
Cooperstown520231999
Forman419971997
Danzig420142000
Buchanan420242011
Danzig 2420232019
Horsehead Lk320241996
Wild Rose320242004
Lakota 2220242011
Wimbledon120172016
Niles120002000
Tobacco119961995
Denbigh120242014
Bowman120192001
Gorham119971997
Bentley120112011
Powers Lake120231997
Sheyenne Lk120241986
Turtle Mtns119871987

Western Grebe Population Trend in Other States

arizonacaliforniacoloradoidahokansasminnesotamontananebraskanevadanew-mexicooregonsouth-dakotautahwashingtonwyoming

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