BirdAnalyst
Species · BCR 3 · BBS 2025 Release · 1966–2024

Arctic Warbler In BCR 3

All regionsBCR 3Generalists

Arctic Warbler in BCR 3 has edged up: up 24% on the route-weighted index since 1998.

+24%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 →
17YearsYears 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 →

No notable trend signals for Arctic Warbler in BCR 3. See the full index history below.

Routes In BCR 3

Routes recording Arctic Warbler 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 →
Dietrich CmpALASKA62014
Happy ValleyALASKA12024
Red DogALASKA12023

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