BirdAnalyst
Species · BCR 10 · BBS 2025 Release · 1966–2024

Barred Owl In Northern Rockies

All regionsNorthern RockiesGeneralists

Barred Owl in Northern Rockies has declined: down 48% on the route-weighted index since 1992.

-48%Since 1992TrendPercent 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 →
8Routes 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 →
12YearsYears 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 Barred Owl in Northern Rockies. See the full index history below.

Routes In Northern Rockies

Routes recording Barred Owl in Northern Rockies.
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 →
Lolo PassIDAHO21998
AveryIDAHO12003
GrangevilleIDAHO12010
CoolinIDAHO12012
St RegisMONTANA12007
Inside RoadMONTANA11998
KellerWASHINGTON11991
Omak CreekWASHINGTON12024

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