Taliabu Barn Owl

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Taliabu Barn Owl
Systematics
Sub-stem : Vertebrates (vertebrata)
Class : Birds (aves)
Order : Owls (Strigiformes)
Family : Barn Owls (Tytonidae)
Genre : Barn Owls ( Tyto )
Type : Taliabu Barn Owl
Scientific name
Tyto nigrobrunnea
Neumann , 1939

The Taliabu barn owl ( Tyto nigrobrunnea ) is a rare species of owl from the barn owl family that is endemic to the Indonesian island of Taliabu, east of Sulawesi , which is part of the Sula Islands . It was considered lost between 1938 and 1991.

features

A description is only available from a female specimen copy that was collected on Taliabu in 1938 and is now in the Museum für Tierkunde Dresden . The size is 31 centimeters, the wing length 283 millimeters and the tail length 125 millimeters. The weight is unknown. The underside is dark brown. Whitish spots can be seen from the top of the head to the back of the head and on the wing covers. The wings of the hand are monochrome, dark brown and not marked. The arm wings are predominantly brown with white tips. The tail is brown with three darker bands. The face veil is light reddish brown and becomes darker towards the eyes. The spring wreath is almost the same color. The underside is deep golden brown with dark spots, some of which have light areas. The legs are feathered reddish brown up to the lower third of the barrel. The eyes are black-brown. The beak is blackish gray. The featherless areas of the barrel and toes are gray. The strong claws are blackish. The habitus of the young birds is unknown.

habitat

The specimen copy was collected in the lowland forest. When it was rediscovered in 1991, a specimen was observed during the night near Tubang in northeast Taliabu in a selectively felled lowland forest.

Way of life

Nothing is known about the way of life of the Taliabu barn owl. Their feeding habits are believed to be similar to those of related species.

Existence and endangerment

The Taliabu barn owl was only known from the type specimen from 1938 for a long time before it was rediscovered in October 1991. There is no population data. BirdLife International estimates the population at 250 to 1000 specimens and classifies the species as "endangered". The main threat is deforestation, which is happening on a large scale on Taliabu. The majority of the Taliabus lowland forests below 800 meters are designated for logging concessions for the timber industry. The selective logging has already created a mosaic of forest stands of different ages, with only a few large areas of primary lowland forests remaining. The effects of habitat degradation on the species are unknown, but forest degradation poses a significant threat.

literature

  • J. Del Hoyo, A. Elliot, J. Sargatal (Eds.): Handbook of the Birds of the World. Volume 5: Barn-Owls to Hummingbirds. Lynx Edicions, 1999, ISBN 84-87334-25-3 .
  • Claus König, Friedhelm Weick: Owls of the World. 2nd Edition. Christopher Helm, London 2008, ISBN 978-0-7136-6548-2

Web links