BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Long-eared Owl In Great Basin

All regionsGreat BasinGeneralists

Long-eared Owl in Great Basin has collapsed: down 84% on the route-weighted index since 1980.

-84%Since 1980TrendPercent 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 →
13Routes 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 →

No notable trend signals for Long-eared Owl in Great Basin. See the full index history below.

Routes In Great Basin

Routes recording Long-eared Owl in Great Basin.
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 →
JoelIDAHO31998
BuchananOREGON31980
DeschutesOREGON21972
Moses LakeWASHINGTON22007
Deep SpringsCALIFORNIA11993
SpringfieldIDAHO11977
Pasadena ValIDAHO11993
Dobbin CreekNEVADA12015
Fandango CanOREGON12016
Battle MtnOREGON11993
WinthropWASHINGTON12021
Hanford SiteWASHINGTON11993
Horn RapidsWASHINGTON12011

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