BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Lucy's Warbler In Great Basin

All regionsGreat BasinArid-land birds

Lucy's Warbler in Great Basin has surged: up 500% on the route-weighted index since 1997.

+500%Since 1997TrendPercent 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 →
3Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
17YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable 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 →

Lucy's Warbler has surged in Great Basin: up 500% on the route-weighted index since 1997.

Routes In Great Basin

Routes recording Lucy's Warbler in Great Basin.
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 VallyNEVADA182024
HikoNEVADA32022
NewcastleUTAH12016

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