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

American Coot Population Trend in North Dakota

All statesWetland birds

American Coot in North Dakota has declined: down 32% on the route-weighted index since 1969.

-32%Since 1969TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
45Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable American Coot Trends in North DakotaNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for American Coot in North Dakota. See the full index history below.

American Coot Population Forecast in North Dakota

If the recent trend holds, American Coot in North Dakota is projected to rise about 44% by 2029 — from 7.0 in 2024 to a central estimate of 10 (95% range 0.00–25). A 5-year backtest shows a typical error of ±23.1%, with 100% of held-out values landing inside the 95% band.

+44%Change by 2029TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
10Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–2595% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±23.1%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, American Coot in North Dakota is projected to rise about 44% by 2029 — from 7.0 in 2024 to a central estimate of 10 (95% range 0.00–25). A 5-year backtest shows a typical error of ±23.1%, with 100% of held-out values landing inside the 95% band.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 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
202510.00.0025
202610.00.0025
2027100.0025
2028100.0025
2029100.0025

American Coot Survey Routes in North Dakota

Routes recording American Coot in North Dakota.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Lakota4020091968
Wild Rose3420241982
Sydney3119831967
Buchanan2620241967
Horsehead Lk2520241980
Lakota 22520242010
Wimbledon1720241981
Danzig 21220242019
Niles1020241989
Lake George820221967
Powers Lake820241982
Montpelier820241995
Braddock720221988
Webster620241992
Carpio620171970
Cedar Creek519901971
Rolla420241969
Loraine420161983
Gorham420161968
Forman320241968
Edgeley320241980
Emerado320171974
Parshall320131982
Danzig220141982
Cooperstown220231969

American Coot Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutfloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamichiganminnesotamississippimissourimontananebraskanevadanew-mexiconew-yorknorth-carolinaohiooklahomaoregonpennsylvaniasouth-dakotatennesseetexasutahvermontwashingtonwest-virginiawisconsinwyoming

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