In 1965, workers on Kawau Island (near Auckland, New Zealand) were attempting to reduce a population of tammar wallabies Macropus eugenii that had been introduced to the island years earlier and were now overrunning the place. They were astonished to discover that some of them were not tammar wallabies at all but a miraculously surviving population of parma wallabies Macropus parma, a species thought extinct since before the turn of the 20th century!
The tammar wallaby reduction effort was halted while the parma wallabies were caught and sent to managed breeding facilities in Australia and around the world in the hope that they would reproduce and could eventually be reintroduced to their native habitat.
The renewed interest in the parma wallaby produced another surprise: a few years later, a small population was discovered in the forests of New South Wales in Australia! Further research proved that the parma wallaby was alive and well, and though not common, they could be found in forests areas there.