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Species · BCR 3 · BBS 2026 Release · 1966–2025

Bluethroat In BCR 3

All regionsBCR 3Forest birds

Bluethroat in BCR 3 has surged: up 340% on the route-weighted index since 1998.

+340%Since 1998TrendPercent 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 →
13YearsYears 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 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 →

Bluethroat has surged in BCR 3: up 340% on the route-weighted index since 1998.

Routes In BCR 3

Routes recording Bluethroat in BCR 3.
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 →
Galbraith L.ALASKA42025
Red DogALASKA42025
Happy ValleyALASKA32025

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