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Species · Nevada · BBS 2025 Release · 1966–2024

Plumbeous Vireo Population Trend in Nevada

All statesForest birds

Plumbeous Vireo in Nevada has collapsed: down 77% on the route-weighted index since 1993.

-77%Since 1993TrendPercent 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 →
13Routes 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 →
30YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Plumbeous Vireo 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 declinecomputed 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 →

Plumbeous Vireo has collapsed in Nevada: down 77% on the route-weighted index since 1993.

Plumbeous Vireo Population Forecast in Nevada

If the recent trend holds, Plumbeous Vireo in Nevada is projected to fall about 91% by 2029 — from 0.11 in 2024 to a central estimate of 0.01 (95% range 0.00–0.31). A 5-year backtest shows a typical error of ±87%, with 80% of held-out values landing inside the 95% band.

-91%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 →
0.01Projected 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 →
0.00–0.3195% 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 →
±87%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, Plumbeous Vireo in Nevada is projected to fall about 91% by 2029 — from 0.11 in 2024 to a central estimate of 0.01 (95% range 0.00–0.31). A 5-year backtest shows a typical error of ±87%, with 80% 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 →
20250.040.000.34
20260.030.000.33
20270.030.000.33
20280.020.000.32
20290.010.000.31

Plumbeous Vireo Survey Routes in Nevada

Routes recording Plumbeous Vireo 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 →
Jarbidge220152012
Ranchogrande220241992
Carson River220022001
Austin220182009
Sand Pass120111995
Bald Mtn.120242024
Fish Creek120212013
Comins Lake120052005
Walker Can120221968
Meadow Vally120011997
Toiyabe Nf120182018
Willis120191994
Hawthorne120011997

Plumbeous Vireo Population Trend in Other States

arizonacaliforniacoloradoidahomontananebraskanew-mexicosouth-dakotatexasutahwyoming

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