The tail has six narrow white bars contrasting with grey-brown. They frequently roost during the day on branches in tall, open trees, often while still holding the prey caught the prior night. Distribution. It is the only owl in the world known to exhibit the behaviour of mantling over food while it roosts during the day. The male does all hunting and sometimes aggressively defends the nesting during the brooding stage. Even when food is abundant, territories are at least 800 to 1,000 ha (2,000 to 2,500 acres). Even when food is abundant, the territories are at least 800 to 1,000 ha (2,000 to 2,500 acres) but when food is scarce, their territories tend to be larger. Males have been recorded fighting over breeding rights to females and territories. Not infrequently, prey weight averages between 50-100%, whereas in most other raptors, including large owls, there seems to be a “rule” that most prey weighs 20% or less of the raptors own weight. window.mc4wp.listeners.push( On the New South Wales Threatened Species Conservation Act the powerful owl is scheduled as “Vulnerable”. It is found in coastal areas and in the Great Dividing Range rarely more than 200 km (120 mi) inland. The powerful owl is a typically territorial raptorial bird that maintains a large home range and has long intervals between egg-laying and hatching of clutches. The habitat of the powerful owl is tall, humid forestsranging through to some drier woodlands in northern Victoria and the western slopes of New South Wales and Queensland. Powerful owls typically fly in a slow and deliberate way on their large wings. Duets are frequently heard at the onset of breeding; unpaired males frequently call much more regularly than paired ones. Powerful owls usually use several perches that may be occupied intermittently for years at a time. The nest is usually located a large hollow in a tree and lined with decaying debris and leaf litter. Range is from Eungella and the Dawson River in Queensland south to the central highlands of Victoria and west to Mount Burr in South Australia, the range terminating around Portland, Victoria. In general, the slightly smaller rufous and notably smaller barking owl both display more frequent and more spiritedly aggressive nest defense than the powerful owl does. Nests have been recorded at 8 to 30 m (26 to 98 ft) above the ground but are most often at least 10 to 15 m (33 to 49 ft) high. The eggs are typically laid directly on the rotten wooden floor of the nesting cavity, owls do not build a nest. Powerful owls are so fond of possums that a breeding pair may consume as many as 250 of these animals per year. They will also occasionally range into plantations, mainly pine or native plant plantations, and urban and rural parks and gardens. This is largely because its prey is dependent on native and diverse forests. This owl is the largest species of the “hawk owl” group found in much of Asia and the Australasian region, all included in the genus Ninox. Range is from Eungella and the Dawson River in Queensland south to the central highlands of Victoria and west to Mount Burr in South Australia, the range terminating around Portland, Victoria. However, some overlap in the diet was recorded between all 3 species and a certain level of competition was predicted, in which the powerful owl would presumably be dominant. The Powerful Owl is endemic to eastern and south-eastern Australia, mainly on the coastal side of the Great Dividing Range from Mackay to south-western Victoria. Duets are frequently heard at the onset of breeding. The vast majority of prey is taken from trees, often in or near the tree canopy, including unlikely items such as rock-wallabies (Petrogale ssp.) The young fledge at 6 to 8 weeks.
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