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

Bell's Sparrow In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestGeneralists

Bell's Sparrow in Northern Pacific Rainforest has held roughly steady: up 4% on the route-weighted index since 1975.

+4%Since 1975TrendPercent 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 →
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 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 Bell's Sparrow in Northern Pacific Rainforest. See the full index history below.

Routes In Northern Pacific Rainforest

Routes recording Bell's Sparrow 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 →
French GulchCALIFORNIA82006
HullvilleCALIFORNIA12018
UkiahCALIFORNIA12001

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