BirdAnalyst
Species · Utah · BBS 2026 Release · 1966–2025

American Coot Population Trend in Utah

All statesWetland birds

American Coot in Utah has declined: down 30% on the route-weighted index since 1973.

-30%Since 1973TrendPercent 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 →
38Routes 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 →
49YearsYears 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 UtahNotable 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 Utah. See the full index history below.

American Coot Population Forecast in Utah

If the recent trend holds, American Coot in Utah is projected to rise about 162% by 2030 — from 1.3 in 2025 to a central estimate of 3.3 (95% range 0.00–7.5). A 5-year backtest shows a typical error of ±261.8%, with 100% of held-out values landing inside the 95% band.

+162%Change by 2030TrendPercent 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 →
3.3Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–7.595% 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 →
±261.8%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 Utah is projected to rise about 162% by 2030 — from 1.3 in 2025 to a central estimate of 3.3 (95% range 0.00–7.5). A 5-year backtest shows a typical error of ±261.8%, with 100% of held-out values landing inside the 95% band.19692030
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 →
20263.10.007.4
20273.20.007.4
20283.20.007.4
20293.20.007.5
20303.30.007.5

American Coot Survey Routes in Utah

Routes recording American Coot in Utah.
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 →
Vernal16020181999
Neponset Res5020181995
Bear River4320251993
Wellington 22120092003
Leamington1820172015
Callao1120251992
M Warner Res1020251994
Gold Hill1020171988
Saleratus Cr920181995
Navajo Lake920241969
Main Canyon820251987
Boulder520251988
Bicknell420071998
Alton420191997
Randolph320251993
Alton 2320252021
Salt Springs220051989
Goshen220231994
Dragerton219731973
Woodruff220242024
Dixie Nf220181994
Pine Creek220002000
Moab219971997
Promontory120251973
Timpie Spg119841980

American Coot Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutfloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamichiganminnesotamississippimissourimontananebraskanevadanew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-dakotatennesseetexasvermontwashingtonwest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.