Wis. Stat. § 29.057: Wild animals; possession in open season.

It is unlawful to possess or control at any time a protected wild animal or the carcass of any protected wild animal showing that it was taken during the closed season for the protected wild animal. This section does not apply to farm-raised deer, farm-raised fish, farm-raised game birds, or wild animals that are subject to regulation under ch. 169.