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

Gray Vireo Population Trend in Nevada

All statesForest birds

Gray Vireo in Nevada has risen sharply: up 61% on the route-weighted index since 1998.

+61%Since 1998TrendPercent 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 →
4Routes 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 →
12YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Gray 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 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 →

Gray Vireo has risen sharply in Nevada: up 61% on the route-weighted index since 1998.

Gray Vireo Survey Routes in Nevada

Routes recording Gray 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 →
Meadow Vally620251996
Val Of Fire120242024
Comins Lake120132005
Willis120211997

Gray Vireo Population Trend in Other States

arizonacaliforniacoloradonew-mexicotexasutah

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