This state's classification carries no date range for the species.
Species occurs in Maine's northern boreal forest but is explicitly and structurally closed to hunting statewide, grouped with lynx and cottontail rabbit in the "No Open Season for Hunting" line of the official table.
Confirmed absence of active survey infrastructure, in explicit contrast to the sage-grouse/prairie-chicken "monitoring continues despite closure" pattern seen elsewhere in this registry: Maine's own Wildlife Action Plan rates spruce grouse a Priority 3 Species of Greatest Conservation Need with "insufficient data to conclusively assess distribution and status" and no species-specific conservation actions currently assigned.