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White-rumped munia

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White-rumped munia
in Sikkim, India
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Estrildidae
Genus: Lonchura
Species:
L. striata
Binomial name
Lonchura striata
(Linnaeus, 1766)
Core native range in green
Northern populations (see text) not shown
Synonyms
  • Loxia striata Linnaeus, 1766
  • Uroloncha striata (Linnaeus, 1766)

The white-rumped munia (Lonchura striata) or white-rumped mannikin, sometimes called striated finch in aviculture, is a small passerine bird from the family of waxbill "finches" (Estrildidae). These are not close relatives of the true finches (Fringillidae) or true sparrows (Passeridae).

It is native to tropical continental Asia and some adjacent islands, and has been naturalized in some parts of Japan. Its domesticated descendant, the society finch or Bengalese finch, is found worldwide as a pet and a biological model organism.

Taxonomy

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In 1760 the French zoologist Mathurin Jacques Brisson included a description of the white-rumped munia in his Ornithologie based on a specimen that he believed had been collected from the Isle de Bourbon (Réunion). The specimen is now assumed to have come from Sri Lanka.[2] He used the French name Le gros-bec de l'Isle de Bourbon and the Latin Coccothraustes Borbonica.[3] Although Brisson coined Latin names, these do not conform to the binomial system and are not recognised by the International Commission on Zoological Nomenclature.[4] When in 1766 the Swedish naturalist Carl Linnaeus updated his Systema Naturae for the twelfth edition, he added 240 species that had been previously described by Brisson.[4] One of these was the white-rumped munia. Linnaeus included a brief description, coined the binomial name Loxia striata and cited Brisson's work.[5] The specific name striata is Latin for "striated ".[6] This species is now placed in the genus Lonchura that was introduced by the English naturalist William Henry Sykes in 1832.[7]

There are six subspecies:[8]

Medium brown above, except on the face and remiges, buffy below
  • L. s. striata (Linnaeus, 1766) – southern Indian mainland, Sri Lanka
Dark chocolate-brown above, white below

A domesticated hybrid called the society finch, sometimes called Lonchura domestica is said by some sources to have L. s. striata in its ancestry, although other theories suggest contributions from the white-throated munia. The hybrid with numerous variants in plumage are thought to have been established by aviculturists in Japan.[9]

Description

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The white-rumped munia is approximately 10 to 11 cm in length, with a stubby grey bill and a long black pointed tail. The adults are brown above and on the breast, and lighter below; the rump is white. There is some variation between the subspecies, but the sexes are almost impossible to distinguish in all subspecies; males have a more bulky head and bill.[10]

Habitat and distribution

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The white-rumped munia is a common resident breeder ranging from the Indian subcontinent to southern China east to Taiwan, and through Southeast Asia south to Sumatra; it frequents open woodland, grassland and scrub, and is well able to adapt to agricultural land use. It is a gregarious bird which feeds mainly on seeds, moving through the undergrowth in groups and sometimes accompanying other birds such as puff-throated babblers (Pellorneum ruficeps). The nest is a large domed grass structure in a tree, bush or grass into which three to eight white eggs are laid.[10][11][12] They are also known to use abandoned nests of Baya weaver. They are often found near water and have been observed feeding on algae. It has been suggested that they obtain protein from their diet of algae often in the species Spirogyra, which grows in paddy fields.[13][14][15]

It is a common and widespread bird across its large range, and is thus not considered a threatened species by the IUCN. In fact, it may locally become a nuisance pest of millets and similar grains. Even the Nicobar Islands subspecies with its limited range seems to be able to cope well with human settlement. As it is a drab-coloured and rather reclusive bird inhabiting dense undergrowth, the white-rumped munia is not necessarily conspicuous even where it occurs in considerable numbers.[1][16][17]

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References

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  1. ^ a b BirdLife International (2016). "Lonchura striata". IUCN Red List of Threatened Species. 2016: e.T22719806A94645276. Retrieved 7 November 2021.
  2. ^ Paynter, Raymond A. Jr, ed. (1968). Check-list of birds of the world. Vol. 14. Cambridge, Massachusetts: Museum of Comparative Zoology. p. 373.
  3. ^ Brisson, Mathurin Jacques (1760). Ornithologie, ou, Méthode contenant la division des oiseaux en ordres, sections, genres, especes & leurs variétés (in French and Latin). Vol. 3. Paris: Jean-Baptiste Bauche. pp. 243–244, Plate 13 fig 4. The two stars (**) at the start of the section indicates that Brisson based his description on the examination of a specimen.
  4. ^ a b Allen, J.A. (1910). "Collation of Brisson's genera of birds with those of Linnaeus". Bulletin of the American Museum of Natural History. 28: 317–335. hdl:2246/678.
  5. ^ Linnaeus, Carl (1766). Systema naturae : per regna tria natura, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis (in Latin). Vol. 1, Part 1 (12th ed.). Holmiae (Stockholm): Laurentii Salvii. p. 306.
  6. ^ Jobling, J.A. (2018). del Hoyo, J.; Elliott, A.; Sargatal, J.; Christie, D.A.; de Juana, E. (eds.). "Key to Scientific Names in Ornithology". Handbook of the Birds of the World Alive. Lynx Edicions. Retrieved 4 May 2018.
  7. ^ Sykes, William Henry (1832). "Catalogue of birds of the raptorial and insessorial orders (systematically arranged,) observed in the Dukhun". Proceedings of the Zoological Society of London. 2 (18): 77–99 [94].
  8. ^ Gill, Frank; Donsker, David, eds. (2018). "Waxbills, parrotfinches, munias, whydahs, Olive Warbler, accentors, pipits". World Bird List Version 8.1. International Ornithologists' Union. Retrieved 2 May 2018.
  9. ^ Svanberg, Ingvar (2008). "Towards a cultural history of the Bengalese Finch (Lonchura domestica)". Der Zoologische Garten. 77 (5–6): 334–344. Bibcode:2008DZGar..77..334S. doi:10.1016/j.zoolgart.2008.05.003. ISSN 0044-5169.
  10. ^ a b Grimmett, Richard; Inskipp, Carol, Inskipp, Tim & Byers, Clive (1999): Birds of India, Pakistan, Nepal, Bangladesh, Bhutan, Sri Lanka, and the Maldives. Princeton University Press, Princeton, N.J., ISBN 0-691-04910-6
  11. ^ Inskipp, Carol & Inskipp, Tim & Sherub (2000). "The ornithological importance of Thrumshingla National Park, Bhutan" (PDF). Forktail. 14: 147–162.
  12. ^ Singh, A.P. (2002). "New and significant records from Dehra Dun valley, lower Garhwal Himalayas, India" (PDF). Forktail. 18: 151–153. Archived from the original (PDF) on 2008-07-25. Retrieved 2009-06-14.
  13. ^ Pillai, NG. "On the food of the Whitebacked Munia Lonchura striata". Newsletter for Birdwatchers. 7 (12): 6–7.
  14. ^ Pillai, N. G. (1968). "The greenalgae, Spirogyra sp., in the diet of the White-backedMunia, Lonchura striata (Linn.)". J. Bombay Nat. Hist. Soc. 65: 490–491.
  15. ^ Avery, ML. "Diet and breeding seasonality of sharp-tailed munias, Lonchura striata, in Malaysia" (PDF). Auk. 97 (1): 160–166. doi:10.1093/auk/97.1.160.
  16. ^ Bangs, Outram (1932). "Birds of western China obtained by the Kelley-Roosevelts expedition". Field Mus. Nat. Hist. Zool. Ser. Publication. 18 (11): 343–379. doi:10.5962/bhl.title.3192.
  17. ^ Sankaran, R. (1991). "An annotated list of the endemic avifauna of the Nicobar islands" (PDF). Forktail. 13: 17–22. Archived from the original (PDF) on 2008-08-28. Retrieved 2009-05-23.
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