Out of Africa

David Attenborough explains that the hot, dry summers of Mediterranean Europe would suit many African animals, but the cold, wet winters keep them out. However a few have colonised Europe. He visits a cave on Cyprus to see a colony of Roussette fruit bats. These are the only fruit bats to have developed a type of echolocation, though it is very primitive compared to that of the insect-eating bats. But at least it means the Roussette fruit bats can shelter in the depths of caves to avoid the winter cold. The crested porcupine is another African animal that lives in Europe. A porcupine family feeds in the woods at night. They shelter from the winter cold in underground dens. Porcupines are only found in Sicily and Italy, so may have been introduced there by the Romans.

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