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Greater Sooty Owl
Greatersootyowl
Names
Common Name: Greater Sooty Owl
Scientific Name: Tyto tenebricosa
Appearance
large dark eyes are set in a round large facial disk. The facial disk is dark gray-silver or sooty black (changing with age) and has a heavy black edge. The upper part of the owl is black to dark gray and the under part is lighter
Behavior
Sooty Owls are territorial and are thought to remain in the same area throughout their adult lives.
Please note that this information is taken from the series and may not be factual.

The Sooty Owl (Tyto tenebricosa), also known as the Greater Sooty Owl, is a medium to large owl found in south-eastern Australia, Montane rainforests of New Guinea and have been seen on Flinders Island in the Bass Strait. They have a finely white spotted head with scattered white spots on the wings. The females are lighter colored than the males. The females length is 37–43 cm and weighs 750-1200 gm. The male is smaller and length is 37–43 cm and weighs 500-700 gm. The wing length is 30–40 cm. The large dark eyes are set in a round large facial disk. The facial disk is dark gray-silver or sooty black (changing with age) and has a heavy black edge. The upper part of the owl is black to dark gray and the under part is lighter. Their call is a piercing shriek which can last up to two seconds. The tail is short and the legs are feathered. The feet and talons are large.
The Lesser Sooty Owl (T. t. multipunctata), is currently considered to belong to this species. It is substantially smaller and occurs in the wet tropics region of North Queensland, Australia.

Habitat

Sooty Owls are nocturnal and roost in large tree hollows, caves and in dense foliage during daylight hours. Rarely seen or heard they can be found in areas with deep gullies in moist forests, where smooth-barked gum trees, tree ferns and wet forest under-storey are present. They may hunt in drier areas but usually roost and breed in the moister areas.

Diet

Mammals ranging from large arboreal marsupials such as the Greater Glider, through Ringtail Possums and Sugar Gliders to bandicoots, rodents and antechinus comprise the most common items in the Sooty Owl diet. They also occasionally take birds, bats and insects.

Behavior

Sooty Owls are territorial and are thought to remain in the same area throughout their adult lives. Sooty owls have a distinctive range of calls including typical barn owl like rasps and screams, a distinctive "falling bomb" call and an insect like twitter used during close contact with other Sooty Owls.

Reproduction

The nest is in a large hollow tree or a cave. The female roosts in the nest for several weeks before she lays one or two dull white eggs. Usually nesting commences from January through June but could occur at almost any time of the year depending on location and climatic conditions. The incubation time is 42 days. The males brings food to the female who rarely leaves the nest. The young are born with dull grey down and can fly in three months. The young remain dependent on the parents for an extended period after fledging. Their lifespan is unknown. They are territorial and sedentary throughout the year.

Conservation status

International

Their status is not globally threatened.

Australia

Sooty Owls are not listed as threatened on the Australian Environment Protection and Biodiversity Conservation Act 1999. However, their conservation status varies from state to state within Australia. For example:

  • The Sooty Owl is listed as threatened on the Victorian Flora and Fauna Guarantee Act (1988). Under this Act, an Action Statement for the recovery and future management of this species has been prepared.
  • On the 2007 advisory list of threatened vertebrate fauna in Victoria, the Sooty Owl is listed as vulnerable.
  • On the New South Wales Threatened Species Conservation Act (1995), the Sooty Owl is scheduled as vulnerable.

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