There is at least one verifiable example of a population of wild wallabies outside Australasia. Since World War II there has a been a colony of red-necked wallabies in the [Peak District]? in England, descended from wallabies from a private zoo. The population reached about 50, but their numbers plunged during the severe winter of 1962-1963, and they were believed to have become extinct in the late 1990s (although there was a claimed sighting in 2000). However, there are believed to be dozens of other wallabies living in the wild in Great Britain, having escaped from zoos or private collections.
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