BirdAnalyst
Species · BCR 33 · BBS 2025 Release · 1966–2024

Woodhouse's Scrub-Jay In Sonoran and Mojave Deserts

All regionsSonoran and Mojave DesertsGeneralists

Woodhouse's Scrub-Jay in Sonoran and Mojave Deserts has fallen sharply: down 54% on the route-weighted index since 1983.

-54%Since 1983TrendPercent 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 →
5Routes 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 →
14YearsYears 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 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 →

Woodhouse's Scrub-Jay has fallen sharply in Sonoran and Mojave Deserts: down 54% on the route-weighted index since 1983.

Routes In Sonoran and Mojave Deserts

Routes recording Woodhouse's Scrub-Jay in Sonoran and Mojave Deserts.
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 →
Jean LakeNEVADA32010
OatmanARIZONA12004
WikieupARIZONA12002
IvanpahCALIFORNIA12019
CimaCALIFORNIA11990

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