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

Western Wood-Pewee Population Trend in Nevada

All statesAerial insectivores

Western Wood-Pewee in Nevada has surged: up 370% on the route-weighted index since 1971.

+370%Since 1971TrendPercent 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 →
29Routes 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 →
41YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Western Wood-Pewee 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 →

Western Wood-Pewee has surged in Nevada: up 370% on the route-weighted index since 1971.

Western Wood-Pewee Population Forecast in Nevada

If the recent trend holds, Western Wood-Pewee in Nevada is projected to fall about 41% by 2030 — from 0.95 in 2025 to a central estimate of 0.56 (95% range 0.09–1.0). A 5-year backtest shows a typical error of ±42.8%, with 100% of held-out values landing inside the 95% band.

-41%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 →
0.56Projected 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 →
0.09–1.095% 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 →
±42.8%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, Western Wood-Pewee in Nevada is projected to fall about 41% by 2030 — from 0.95 in 2025 to a central estimate of 0.56 (95% range 0.09–1.0). A 5-year backtest shows a typical error of ±42.8%, 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 →
20260.540.071.0
20270.550.071.0
20280.550.081.0
20290.560.081.0
20300.560.091.0

Western Wood-Pewee Survey Routes in Nevada

Routes recording Western Wood-Pewee 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 →
Fallon1020251995
Carson River720022001
Meadow Vally620251998
Ruby Valley620011999
Jarbidge520151997
Gardnerville420121997
Willis420211988
Hiko320161969
Gardnerville 2320252013
Calico Spr219701970
Piute Mdws120182018
Comins Lake120152005
Ranchogrande120081990
Sand Pass120212005
Humboldt Nf120181993
Fish Creek120041998
Walker Can120211992
Mizpah119901990
Ash Meadows120191994
Virgin Creek120131995
Ruby Valley 2120162004
Majors Place120241999
Dobbin Creek120041982
Minerva120241989
Caliente120252025

Western Wood-Pewee Population Trend in Other States

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