Permitted uses and structures: the harvesting of wild crops such as marsh hay, ferns, moss, wild rice, berries, tree fruits, and tree seeds; sustained yield forestry; utilities such as but not restricted to telephone, telegraph, and power transmission lines; hunting, fishing, scenic, historic, scientific and wildlife preserve; nonresident buildings used solely in conjunction with the raising of waterfowl or fish; hiking trails and bridle paths; accessory uses; public and private parks and picnic areas; regulatory signs not over six square feet; and general farming provided that no drainage, filling or dredging takes place and no farm buildings are constructed.