Forest management activities, especially logging, that reduce densities of hollow-bearing trees in the landscape are therefore likely to decrease the long-term carrying capacity of the landscape for the powerful owl. Powerful Owls hunt by swooping down from trees, snatching prey with their talons. The dietary reliance upon hollow-dependent mammals in foothill forests (averaging >70%) is of conservation concern, especially when non-hollow-dependent prey are rare. A pair in Namadgi National Park took five Sugar. Typically, a higher percentage of powerful owl diet comprised birds closer to cleared land. The diet of three Powerful Owls Ninox strenua in the Australian Capital Territory was studied in 2007.
There was geographical dietary variation between coastal and foothill forest sites, with the sugar glider (Petaurus breviceps) and birds consumed more frequently in foothill forests, whereas the common ringtail possum (Pseudocheirus peregrinus) was frequently consumed only in coastal forests. The breeding season diet of the Powerful Owl Ninox strenua at Brisbane, Queensland. The greater glider (Petauroides volans) was the dominant dietary item across the region in terms of both frequency of consumption and biomass contribution. Mammals dominated the diet at all sites, but birds were also consumed regularly.
This study reports the diet of the powerful owl (Ninox strenua) in East Gippsland, from a dataset of 2009 vertebrate prey items collected from 53 sites. Geographic variation in the diet of the powerful owl (Ninox strenua) at a local scale Geographic variation in the diet of the powerful owl (Ninox strenua) at a local scale
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