BirdAnalyst
Species · California · BBS 2025 Release · 1966–2024

Woodhouse's Scrub-Jay Population Trend in California

All statesGeneralists

Woodhouse's Scrub-Jay in California has held roughly steady: down 8% on the route-weighted index since 1983.

-8%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 StateSurvey 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 Woodhouse's Scrub-Jay Trends in CaliforniaNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Woodhouse's Scrub-Jay in California. See the full index history below.

Woodhouse's Scrub-Jay Survey Routes in California

Routes recording Woodhouse's Scrub-Jay in California.
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 →
Deep Springs120222022
Cima119901979
Benton120222021
Big Pine120232023
Ivanpah120191994

Woodhouse's Scrub-Jay Population Trend in Other States

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