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

American Coot Population Trend in Nevada

All statesWetland birds

American Coot in Nevada has surged: up 355% on the route-weighted index since 1970.

+355%Since 1970TrendPercent 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 →
18Routes 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 →
51YearsYears 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 NevadaNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

American Coot has surged in Nevada: up 355% on the route-weighted index since 1970.

American Coot Population Forecast in Nevada

If the recent trend holds, American Coot in Nevada is projected to rise about 251% by 2029 — from 1.2 in 2024 to a central estimate of 4.3 (95% range 0.00–12). A 5-year backtest shows a typical error of ±185.8%, with 100% of held-out values landing inside the 95% band.

+251%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 →
4.3Projected 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 →
0.00–1295% 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 →
±185.8%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 Nevada is projected to rise about 251% by 2029 — from 1.2 in 2024 to a central estimate of 4.3 (95% range 0.00–12). A 5-year backtest shows a typical error of ±185.8%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20254.20.0012
20264.20.0012
20274.20.0012
20284.20.0012
20294.30.0012

American Coot Survey Routes in Nevada

Routes recording American Coot in Nevada.
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 →
Fallon5920231992
Virgin Creek2920181995
Bald Mtn.1520241992
Cortez1420241968
Majors Place720161990
Gardnerville620111995
Sheldon Nwr320022001
Ranchogrande219981998
Ash Meadows220241993
Eureka220171990
Dobbin Creek220141968
Sand Pass120142014
Nixon119881988
Charleston Reservoir120242024
Toiyabe Nf120162016
Ruby Valley 2120242004
Meadow Vally120242017
Hiko120232021

American Coot Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutfloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamichiganminnesotamississippimissourimontananebraskanew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-dakotatennesseetexasutahvermontwashingtonwest-virginiawisconsinwyoming

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