BirdAnalyst
Species · BCR 15 · BBS 2025 Release · 1966–2024

Pine Grosbeak In Sierra Nevada

All regionsSierra NevadaGeneralists

Pine Grosbeak in Sierra Nevada has fallen sharply: down 51% on the route-weighted index since 1984.

-51%Since 1984TrendPercent 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 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 →

Pine Grosbeak has fallen sharply in Sierra Nevada: down 51% on the route-weighted index since 1984.

Routes In Sierra Nevada

Routes recording Pine Grosbeak in Sierra Nevada.
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 →
WestvilleCALIFORNIA21984
WoodfordsCALIFORNIA12023
Greenhorn MtCALIFORNIA11974
Meadow ValleyCALIFORNIA11999
Little TruckeeCALIFORNIA12004

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