It is unlawful to buy, sell, trade, or barter or offer for sale or offer to buy any protected wild mammals and birds or parts of mammals or birds except as specifically allowed by this title. Except as otherwise provided by law, this section shall not apply to the sale of rabbits and grey squirrels taken during the legally established seasons. A person violating this section is guilty of a misdemeanor and, upon conviction, must be fined not less than one hundred dollars and not more than five hundred dollars or imprisoned up to thirty days.