Silk jala

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Silk jala
Silk jala (Philepitta castanea), male in courtship plumage

Silk jala ( Philepitta castanea ), male in courtship plumage

Systematics
Order : Passerines (Passeriformes)
Subordination : Screeching Birds (Tyranni)
Partial order : Screaming birds of the old world (Eurylaimides)
Family : Lappenpittas (Philepittidae)
Genre : Philepitta
Type : Silk jala
Scientific name
Philepitta castanea
( Statius Müller , 1776)
Seidenjala, female in Ranomafana National Park

The Seidenjala ( Philepitta castanea ) is an endemic to Madagascar occurring bird from the family of asity (Philepittidae).

features

Silk jalas reach a body length of 14.0 to 16.5 centimeters. The control springs are very short. Between the sexes there is at times a clear sexual dimorphism in terms of plumage color . The males show almost monochrome black plumage during the courtship and breeding season. The narrow stripe above the eyes is blue. An elongated, bright green flap of skin stands out above it. During the rest of the time, the entire plumage is cloudy yellow to olive green. In females, the throat, belly and chest are yellow-green and light-piebald, regardless of time, the back and feathers are matt olive-green to olive-brown.

distribution and habitat

The distribution area of ​​the silk jala extends along the entire east side of Madagascar. It prefers to colonize rainforests at altitudes between 600 and 1400 meters.

Way of life

The birds feed almost exclusively on fruits and, to a lesser extent, on nectar and arthropods . Measurements between August and November showed the following food composition:

Food proportions
Food type percent Number of food consumptions
ripe fruits 29.7 428
partially ripe fruits
( Oncostemon leprosum ) 		57.9 834
unripe fruits 12.1 176
nectar 0.1 2
arthropod 0.2 4th
total 100.0 1444

Silk jalas live in polygenic communities. The breeding season falls from September to December. The females carry the majority of the nest building. The pear-shaped nest is made of dry leaves, fibers and moss, placed at the end of a branch with a small roof over the entrance at a height of two to five meters and equipped with three eggs. The incubation period is at least 13 days and the nestling period is a further 17 days.

Danger

The Seidenjala is not uncommon in the territories it has settled and is therefore classified by the IUCN as a LC IUCN 3 1st svg" least concern ".

Individual evidence

  1. ↑ a b c F. Hawkins (2017). Velvet Asity (Philepitta castanea). In: J. del Hoyo, A. Elliott, J. Sargatal, DA Christie & E. de Juana (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (viewed at http://www.hbw.com/node/56352 on March 23, 2017).
  2. ↑ occurrence
  3. ↑ a b c Hajanirina Rakotomanana & Lily-Arison Rene de Roland: Breeding ecology of the endemic, Madagascan, Velvet Asity Philepitta castanea , The Ornithological Society of Japan, 6, 2007, pp. 79–85 [1]
  4. ↑ Oncostemon leprosum
  5. ^ IUCN Red List

literature

  • Josep del Hoyo , Andrew Elliott, David A. Christie: Handbook of the Birds of the World. Volume 10: Cuckoo-shrikes to Thrushes. Lynx Edicions, Barcelona 2005, ISBN 978-84-87334-72-6 .

Web links

Commons : Seidenjala ( Philepitta castanea )  - Collection of images, videos and audio files