Pine martens are mainly active at night and dusk (5). They have a broad diet that varies throughout the year depending on the availability of certain food types. Small rodents, birds, beetles, carrion and eggs are all taken, and berries are very important in the autumn (2). They are adept climbers, but tend to hunt on the ground. Pine martens are territorial, and mark their range with faeces (scats) deposited in prominent locations (2). Mating occurs between July and August, however implantation of the fertilised egg is delayed and the young are produced in early spring of the next year (6). One to five deaf, blind, helpless young are produced (2)(4); they begin to emerge from the den by the middle of June (2) and will be fully independent around 6 months after their birth (7).