Morepork they conceded the two were easily distinguishable in appearance, so maintained the three as subspecies; the Tasmanian boobook only diverged by 2.7% from the other two, while the powerful and rufous owls diverged by 4.4% from each other. Leading from this, the southern boobook was split from the Tasmanian boobook and morepork in volume 5 of the "", however several authors, including Les Christidis and Walter Boles, contested that the data had been misinterpreted from the Norman study, which had not sampled any Australian mainland boobooks at all. They treated the three taxa (southern, Tasmanian boobooks, and moreporks) as a
Ninox novaeseelandiae ocellata southern boobooks may directly correlate with rainfall, with the paler species being found in areas of lower rainfall, indicating the semi arid regions of Australia (the range of the ocellata sub species). The boobook has a very distinctive double hoot ‘boo-book’ with the second note being lower. This call has earned it the common name of ‘mopoke’. Subspecies ocellata tends to inhabit the warmer areas of Australia, from north-western New South Wales/western Queensland spanning across to Western Australia, although it is rarely found in the more arid regions. The boobook is found in a wide variety of habitats, from semi-arid