BirdAnalyst
Species · Washington · BBS 2026 Release · 1966–2025

Lesser Goldfinch Population Trend in Washington

All statesForest birds

Lesser Goldfinch in Washington has surged: up 81% on the route-weighted index since 2014.

+81%Since 2014TrendPercent 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 →
12YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Lesser Goldfinch Trends in WashingtonNotable 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 →

Lesser Goldfinch has surged in Washington: up 81% on the route-weighted index since 2014.

Lesser Goldfinch Survey Routes in Washington

Routes recording Lesser Goldfinch in Washington.
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 →
Snowden720252012
Asotin220222014
Pomeroy120222022
Ewan 2120252025
Ellensburg120132013

Lesser Goldfinch Population Trend in Other States

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Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.