BirdAnalyst
Species · BCR 5 · BBS 2025 Release · 1966–2024

Wilson's Phalarope In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestShorebirds

Wilson's Phalarope in Northern Pacific Rainforest has collapsed: down 80% on the route-weighted index since 1977.

-80%Since 1977TrendPercent 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 →
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 →

Wilson's Phalarope has collapsed in Northern Pacific Rainforest: down 80% on the route-weighted index since 1977.

Routes In Northern Pacific Rainforest

Routes recording Wilson's Phalarope in Northern Pacific Rainforest.
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 →
YrekaCALIFORNIA11999
GazelleCALIFORNIA11988
Warm BeachWASHINGTON12002

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