1870
The Auckland Acclimatisation Society first liberates opossums in the region, somewhere along the Wairoa River between Hunua and Clevedon. It is unclear whether this introduction is successful or not. By the 1940s, however, opossums are numerous in the Hunua Ranges, although an official eradication programme does not begin until the 1960s (see also 8 August 1964).
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