Australian masked owl

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Australian masked owl
Australian Masked-Owl 0A2A8179.jpg
T. n. novaehollandiae
CITES Appendix II (CITES) [2]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Strigiformes
Family: Tytonidae
Genus: Tyto
Species:
T. novaehollandiae
Binomial name
Tyto novaehollandiae
(Stephens, 1826)
Subspecies

See text

The Australian masked owl (Tyto novaehollandiae), also the Australasian masked owl or simply the masked owl, especially in Australia, is a barn owl of Southern New Guinea and the non-desert areas of Australia.

Contents

Taxonomy

Described subspecies of Tyto novaehollandiae include:

Description

Masked owl landing. Masked owl landing.jpg
Masked owl landing.

Brown feathers surround a white, heart-shaped mask. Their dorsal plumage is brown, aside from light gray spots on the upper back. Their front is white with brown spots. Their eye color varies from black to dark brown. The species have sexual dimorphism, females are darker shaded and larger than males.

Male masked owls' weights ranges from 420 to 800 g (0.93 to 1.76 lb), while females are typically much larger ranging from 545 to 1,260 g (1.202 to 2.778 lb). [3] [4] Length ranges between 330 to 410 mm (13 to 16 in) for males and 390 to 500 mm (15 to 20 in) for females. Wing span is up to 1,280 mm (50 in) for southern female masked owls. Masked owls follow the typical pattern of birds from the tropics being much smaller than birds from temperate regions. In this instance, Tasmanian masked owls are the largest and the largest of the entire barn-owl family. Among the species in the family, only the greater sooty owl is on average heavier than the Australian masked owl but the Tasmanian species is rather larger and heavier even than the greater sooty owl. [4] [5] The mean weight of the nominate subspecies was found to be 476 g (1.049 lb) in males and 630 g (1.39 lb) in females while in Tasmania, mean weighs for males were 632 g (1.393 lb) and for females were 845 g (1.863 lb). [5]

Naming

Other common names have been used for this species in the past. For example:

Habitat

Masked owl in flight at Lone Pine Koala Sanctuary Barn Owl in flight at Lone Pine Koala Sanctuary.jpg
Masked owl in flight at Lone Pine Koala Sanctuary

The Australian masked owl inhabits timbered areas, often with a shrub understorey. In Australia they are seldom found more than 300 km inland. They roost and nest in large tree hollows near foraging areas. They are nocturnal and their prey includes rodents, small dasyurids, possums, bandicoots, rabbits, bats, birds, reptiles and insects. Foraging is primarily for terrestrial prey, however some prey is taken from the trees or in flight. The population of the Australian masked owl on the mainland is declining and several states have this owl on the Species Conservation Status list. They are territorial and may remain in the same area once they have established a breeding territory. A 2020 case study done using radio telemetry showed that the “home” range of these owls might be as large as 19–23 km2, but this data remains ambiguous due to the small sample size. [7] The breeding population in Tasmania's Takayna rainforest is under threat from a proposal by the MMG Mining Company,68% of which is owned by China's Minmetals conglomerate to dump acidic mineral waste by flooding the forest with a dam to hold its tailings. [8] As of February 2024, the plan is awaiting ministerial approval by Australia's Environmental Minister Tanya Plibersek. [8]

Reproduction

They breed when conditions are favorable which can be any time of the year. The nest is usually built in hollow trees with soil, mulch or sand. Some populations are known to use caves or rock crevices for nesting and roosting. [9] The female lays two or three eggs and incubates them while the male hunts for food. The young are white or off white when they first develop feathers. They can leave the nest at two to three months of age but return to be fed by the parents for another month before going on their own.

Conservation status

The population of the Australian masked owl on the mainland is declining and several states have placed this owl on the Species Conservation Status list.

In Victoria (Australia), the masked owl is a listed threatened bird, [10] and an Action Statement has been prepared under the Flora and Fauna Guarantee Act 1988. In New South Wales, the masked owl is scheduled as Vulnerable under the Biodiversity Conservation Act (2016).[ citation needed ]

Related Research Articles

<span class="mw-page-title-main">Tytonidae</span> Family of birds

The bird family Tytonidae, which includes the barn owlsTyto and the bay owlsPhodilus, is one of the two families of owls, the other being the true owls or typical owls, Strigidae. They are medium to large owls with large heads and characteristic heart-shaped faces. They have long, strong legs with powerful talons. They also differ from the Strigidae in structural details relating in particular to the sternum and feet.

<span class="mw-page-title-main">Wedge-tailed eagle</span> Bird of prey within the genus Aquila

The wedge-tailed eagle also known as the eaglehawk, is the largest bird of prey in the continent of Australia. It is also found in southern New Guinea to the north and is distributed as far south as the state of Tasmania. Adults of the species have long, broad wings, fully feathered legs, an unmistakable wedge-shaped tail, an elongated upper mandible, a strong beak and powerful feet. The wedge-tailed eagle is one of 12 species of large, predominantly dark-coloured booted eagles in the genus Aquila found worldwide. Genetic research has clearly indicated that the wedge-tailed eagle is fairly closely related to other, generally large members of the Aquila genus. A large brown-to-black bird of prey, it has a maximum reported wingspan of 2.84 m and a length of up to 1.06 m.

<span class="mw-page-title-main">Black currawong</span> Large passerine bird endemic to Tasmania and Bass Strait islands

The black currawong, also known locally as the black jay, is a large passerine bird endemic to Tasmania and the nearby islands within the Bass Strait. One of three currawong species in the genus Strepera, it is closely related to the butcherbirds and Australian magpie within the family Artamidae. It is a large crow-like bird, around 50 cm (20 in) long on average, with yellow irises, a heavy bill, and black plumage with white wing patches. The male and female are similar in appearance. Three subspecies are recognised, one of which, Strepera fuliginosa colei of King Island, is vulnerable to extinction.

<span class="mw-page-title-main">Tiger quoll</span> Carnivorous marsupial native to Australia

The tiger quoll, also known as the spotted-tailed quoll, spotted quoll, spotted-tailed dasyure, or tiger cat, is a carnivorous marsupial of the quoll genus Dasyurus native to Australia. With males and females weighing around 3.5 and 1.8 kg, respectively, it is the world's second-largest extant carnivorous marsupial, behind the Tasmanian devil. Two subspecies are recognised; the nominate is found in wet forests of southeastern Australia and Tasmania, and a northern subspecies, D. m. gracilis, is found in a small area of northern Queensland and is endangered.

<span class="mw-page-title-main">Tawny frogmouth</span> Species of bird

The tawny frogmouth is a species of frogmouth native to the Australian mainland and Tasmania and found throughout. It is a big-headed, stocky bird often mistaken for an owl due to its nocturnal habits and similar colouring.

<span class="mw-page-title-main">Australian boobook</span> Species of owl native to Australia

The Australian boobook, is a species of owl native to mainland Australia, southern New Guinea, the island of Timor, and the Sunda Islands. Described by John Latham in 1801, it was generally considered to be the same species as the morepork of New Zealand until 1999. Its name is derived from its two-tone boo-book call. Eight subspecies of the Australian boobook are recognized, with three further subspecies being reclassified as separate species in 2019 due to their distinctive calls and genetics.

<span class="mw-page-title-main">Greater sooty owl</span> Species of owl

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. The lesser sooty owl, is sometimes considered to be conspecific with this species, in which case they are then together referred to as sooty owls. It is substantially smaller and occurs in the wet tropics region of North Queensland, Australia.

<span class="mw-page-title-main">Powerful owl</span> Species of owl

The powerful owl, a species of owl native to south-eastern and eastern Australia, is the largest owl on the continent. It is found in coastal areas and in the Great Dividing Range, rarely more than 200 km (120 mi) inland. The IUCN Red List of Threatened Species also refers to this species as the powerful boobook.

<span class="mw-page-title-main">Eastern pygmy possum</span> Species of marsupial

The eastern pygmy possum is a diprotodont marsupial of south-eastern Australia. Occurring from southern Queensland to eastern South Australia and also Tasmania, it is found in a range of habitats, including rainforest, sclerophyll forest, woodland and heath.

<span class="mw-page-title-main">Tasmanian wedge-tailed eagle</span> Subspecies of bird

The Tasmanian wedge-tailed eagle is an endangered bird of Tasmania. It is a subspecies of the more common wedge-tailed eagle.

<span class="mw-page-title-main">Grey goshawk</span> Species of bird of prey in the family Accipitridae

The grey goshawk is a strongly built, medium-sized bird of prey in the family Accipitridae that is found in eastern and northern Australia. The white morph of this species is known as the white goshawk. This species was formerly placed in the genus Accipiter.

<span class="mw-page-title-main">Lesser sooty owl</span> Species of owl

The lesser sooty owl is a medium-sized masked owl endemic to the wet tropics region of Australia. Once considered a subspecies of the greater sooty owl, it is distinguished by its dark plumage, heavier spotting, and higher-pitched call. The lesser sooty owl has a limited range within northeastern Australia and primarily lives in dark, sheltered areas of the rainforest.

<span class="mw-page-title-main">African grass owl</span> Species of owl

The African grass owl is a species of owl in the barn owl family, Tytonidae.

<span class="mw-page-title-main">Eastern grass owl</span> Species of owl

The eastern grass owl, also known as Chinese grass owl or Australasian grass owl, is a species of owl in the family Tytonidae. They feed predominantly on small rodents.

<span class="mw-page-title-main">Tasmanian masked owl</span> Subspecies of bird

The Tasmanian masked owl is a bird in the barn owl family Tytonidae that is endemic to the island state of Tasmania, Australia. It is the largest subspecies of the Australian masked owl, the largest Tyto owl in the world, and is sometimes considered a full species. The subspecific name castanops, meaning "chestnut-faced", comes from the colouring of the facial disc. It was first described by John Gould, who wrote about it in his Handbook to the Birds of Australia as:

"…a species distinguished from all the other members of its genus by its great size and powerful form. Probably few of the Raptorial birds, with the exception of the Eagles, are more formidable or more sanguinary in disposition."

"Forests of large but thinly scattered trees, skirting plains and open districts, constitute its natural habitat. Strictly nocturnal in its habits, as night approaches it sallies forth from the hollows of the large gum-trees, and flaps slowly and noiselessly over the plains and swamps in search of its prey, which consists of rats and small quadrupeds generally."

<span class="mw-page-title-main">Masked owl</span> Index of animals with the same common name

Masked owl or masked-owl refers to various owls in the genus Tyto, including:

<span class="mw-page-title-main">Eastern barn owl</span> Species of owl

The eastern barn owl is usually considered a subspecies group and together with the American barn owl group, the western barn owl group, and sometimes the Andaman masked owl make up the barn owl. The cosmopolitan barn owl is recognized by most taxonomic authorities. A few separate them into distinct species, as is done here. The eastern barn owl is native to southeastern Asia and Australasia.

<span class="mw-page-title-main">Western barn owl</span> Species of owl

The western barn owl is usually considered a subspecies group and together with the American barn owl group, the eastern barn owl group, and sometimes the Andaman masked owl make up the barn owl. The cosmopolitan barn owl is recognized by most taxonomic authorities. A few separate them into distinct species, as is done here. The western barn owl is native to Eurasia and Africa.

<span class="mw-page-title-main">Northern masked owl</span> Subspecies of bird

The northern masked owl is a large forest owl in the family Tytonidae. The northern kimberli subspecies was identified as a novel race of the Australian masked owl by the Australian ornithologist Gregory Macalister Mathews in his 1912 reference list of Australian birds. The northern masked owl occurs in forest and woodland habitats in northern Australia, ranging from the northern Kimberley region to the northern mainland area of the Northern Territory and the western Gulf of Carpentaria. While the Australian masked owl is recognized as the largest species in the family Tytonidae, the northern masked owl is one of the smallest of the Australian masked owl subspecies.

References

  1. BirdLife International. (2018). Tyto novaehollandiae. The IUCN Red List of Threatened Species 2018. doi:10.2305/IUCN.UK.2018-2.RLTS.T62172196A132190206.en
  2. "Appendices | CITES". cites.org. Retrieved 2022-01-14.
  3. Higgins, P.J. (ed) 1999. Handbook of Australian, New Zealand and Antarctic Birds. Volume 4: Parrots to Dollarbird. Oxford University Press, Melbourne. ISBN   0-19-553071-3
  4. 1 2 Bruce, M.D. and J. S. Marks (2020). Australian Masked-Owl (Tyto novaehollandiae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
  5. 1 2 Dunning, John B. Jr., ed. (2008). CRC Handbook of Avian Body Masses (2nd ed.). CRC Press. ISBN   978-1-4200-6444-5.
  6. 1 2 MacDonald, J. D. (1987). The Illustrated Dictionary of Australian Birds by Common Name. French's Forest, NSW: Reed Books. p. 207. ISBN   0-7301-0184-3.
  7. David, Young (2020). "Home-Range, Habitat Use and Diet of the Tasmanian Masked Owl Tyto Novaehollandiae Castanops". Australian Field Ornithology. 37: 132–140. doi: 10.20938/afo37132140 .
  8. 1 2 Geraldine Brooks,'Plibersek can save this wonderland,' The Age 16 February 2024 p.23.
  9. Mooney, N. (1993) Diet of the Masked Owl in Tasmania: past and present. In 'Australian Raptor Studies'.
  10. DELWP (2013), Advisory List of Threatened Vertebrate Fauna in Victoria: 2013 (PDF), Department of Environment, Land, Water and Planning