Mont. Code § 87-4-704
It is the duty of a person who has in the person's possession and offers for sale any game or game birds to keep a record showing the amount and kind of game and game birds received by the person, together with shipping and transportation receipts showing the true time and place of shipment of the game and game birds and the name of the person shipping the game and game birds. However, any merchant in Montana selling game or game birds to any hotelkeeper, restaurant keeper, or other person shall, in addition to the record and receipts required to be kept by the merchant, keep a record of the date of sale, the kind and amount of game or game birds, and the name of the purchaser. In the case of hotelkeepers, restaurant keepers, or other persons buying game or game birds from a merchant within the state of Montana, a receipt from the merchant showing the date and the kind and amount of game or game birds purchased is sufficient evidence of compliance with the provisions of this part by the hotelkeeper, restaurant keeper, or other person.
§ 87-4-704, MCA