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

Rufous Hummingbird In Sierra Nevada

All regionsSierra NevadaGeneralists

Rufous Hummingbird in Sierra Nevada has fallen sharply: down 61% on the route-weighted index since 1973.

-61%Since 1973TrendPercent 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 →
11Routes 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 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 →

Rufous Hummingbird has fallen sharply in Sierra Nevada: down 61% on the route-weighted index since 1973.

Routes In Sierra Nevada

Routes recording Rufous Hummingbird 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 →
WestvilleCALIFORNIA31972
Pine MountainCALIFORNIA32006
Eagle LakeCALIFORNIA21972
Silver CityCALIFORNIA22001
DardanelleCALIFORNIA11978
WoodfordsCALIFORNIA11986
SattleyCALIFORNIA12003
Butte MeadowCALIFORNIA11973
GeneseeCALIFORNIA11987
RivertonCALIFORNIA11975
Hat CreekCALIFORNIA11987

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