This state's classification carries no date range for the species.
American woodcock is entirely absent from Montana FWP's 2026 Waterfowl/Sandhill Crane/Mourning Dove/Snipe regulations booklet (searched cover to cover) — no season, closed status, or mention of any kind. The species' documented range lies east of the 98th meridian and does not reach Montana, consistent with FWP not regulating it here.