This state's classification carries no date range for the species.
Occurs in Michigan (small Upper Peninsula boreal-forest population) but is explicitly named as 'Protected wildlife' in the MI DNR 2026 regulations summary glossary and 'cannot be taken at any time.' This is a statutory prohibition, distinct from a season simply not being published.
Lower-confidence closure, flagged explicitly (mirrors the CA white-tailed ptarmigan and IL/IN ruffed grouse judgment calls from prior Tier B batches): spruce grouse is a Species of Special Concern in Michigan with a closed season, but no MI DNR spring survey, drumming/pellet count, or monitoring program was found after two independent search passes (the Tier A registry's own pass, plus a fresh attempt this pass: a direct fetch of MI DNR's species page returned HTTP 403, and a targeted search surfaced only Minnesota's spruce grouse program, not Michigan's). Not a documented confirmed-absence statement from MI DNR itself — worth a second look with a working fetch path or a direct MI DNR inquiry.