Utilisation of different ages of heather on three Scottish moors by red grouse, mountain hares, sheep and red deer [Feed preferences, Calluna vulgaris, Lagopus lagopus scoticus, Lepus timidus, Cervus elaphus, range management, feacal droppings]

age altura animal salvaje animal sauvage cerf deer edad faeces feces grazing hares hauteur heces height liebre ovin ovinos pastoreo sheep venado wild animals