Mantaritza Biosphere Reserve biotic province. The varied fauna includes brown bear "(Ursus arctos)" , red deer "(Cervus elaphus)", roe deer "(Capreolus capreolus)", wild boar (Sus scrofa), pine marten "(Martes martes)", European badger "(Meles meles"), hazel grouse "(Bonasa bonasia)", black woodpecker "(Dryocopus martius)" and European crested tit "(Parus cristatus)". This area has been little affected by man. Before the biosphere reserve was designated in 1977, small-scale selective cutting took place and water reservoirs were constructed. This biosphere reserve is currently under revision. Mantaritza Biosphere Reserve Mantaritza Biosphere Reserve () is situated to the north of Golyama Syutka Peak in the Rhodope Mountains in Bulgaria,
European hedgehog days they can roll into a ball. Weaning occurs at four to six weeks of age. European hedgehogs may live to ten years of age, although the average life expectancy is three years. Starvation is the most common cause of death, usually occurring during hibernation. If alarmed, the animal will roll into a ball to protect itself. Many potential predators are repelled by its spines, but predation does occur. Remains of hedgehogs have been found in the stomachs of European badgers ("Meles meles"), red foxes ("Vulpes vulpes") and pine martens ("Martes martes"). A large portion of these may be from