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Články z Yahoo!How Soay Sheep Survive on Dreary Scottish Isles (LiveScience.com)

31. 10 2010 (23:40)

LiveScience.com - On the Scottish archipelago of St. Kilda, the Soay sheep may not have any natural predators, but they do have the elements to contend with: a lack of food, brutal weather that can kill off half the population at a time and parasitic worms that live inside their bodies and suppress their immune systems.