BirdAnalyst
Species · BCR 12 · BBS 2025 Release · 1966–2024

Great Gray Owl In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionGeneralists

Great Gray Owl in Boreal Hardwood Transition has declined: down 37% on the route-weighted index since 1986.

-37%Since 1986TrendPercent 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 →
12Routes 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 →

No notable trend signals for Great Gray Owl in Boreal Hardwood Transition. See the full index history below.

Routes In Boreal Hardwood Transition

Routes recording Great Gray Owl in Boreal Hardwood Transition.
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 →
CromwellMINNESOTA11994
Sawbill LndgMINNESOTA12013
FloodwoodMINNESOTA11983
CohassetMINNESOTA11989
Little ForkMINNESOTA12009
WaskishMINNESOTA11986
JordanMINNESOTA12007
BabbittMINNESOTA12013
BigforkMINNESOTA12024
Red LakeMINNESOTA12008
NebishMINNESOTA12016
BayfieldWISCONSIN12008

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