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

Snowy Plover Population Trend in California

All statesShorebirds

Snowy Plover in California has surged: up 106% on the route-weighted index since 1979.

+106%Since 1979TrendPercent 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 →
15YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Snowy Plover 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 →

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 →

Snowy Plover has surged in California: up 106% on the route-weighted index since 1979.

Snowy Plover Survey Routes in California

Routes recording Snowy Plover 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 →
Jofegan 2920242024
Dorris520111980
Niland119911979
Haiwee Res119761975

Snowy Plover Population Trend in Other States

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