John, According to IOC version 3.1, Morepork – Ninox novaeseelandiae has 3 subspecies – leucopsis (Tasmania), novaeseelandiae (New Zealand) & undulate (Norfolk Island). My understanding is that they brought a bird from New Zealand to breed with the last Norfolk Island bird, so I guess that would make the current birds some sort of hybrid of 2 subspecies of Morepork.
Cheers, Steve McBride
