The Chief of the Forest Service, through the Regional Foresters and Forest Supervisors, shall determine the extent to which national forests or portions thereof may be devoted to wildlife protection in combination with other uses and services of the national forests, and, in cooperation with the Fish and Game Department or other constituted authority of the State concerned, he will formulate plans for securing and maintaining desirable populations of wildlife species, and he may enter into such general or specific cooperative agreements with appropriate State officials as are necessary and desirable for such purposes. Officials of the Forest Service will cooperate with State game officials in the planned and orderly removal in accordance with the requirements of State laws of the crop of game, fish, fur-bearers, and other wildlife on national forest lands.