সাতভনী

অসমীয়া ৱিকিপিডিয়াৰ পৰা
সাতভনী (Jungle Babbler)
Turdoides striata striata from Varanasi
সংৰক্ষণ স্থিতি
জীৱবৈজ্ঞানিক শ্ৰেণীবিভাজন
জগৎ/ৰাজ্য: Animalia
পৰ্ব: Chordata
শ্ৰেণী: Aves
বৰ্গ: Passeriformes
পৰিয়াল: Leiothrichidae
গণ: Turdoides
প্ৰজাতি: T. striata
বৈজ্ঞানিক নাম
Turdoides striata
(Dumont, 1823)
সমাৰ্থক

Turdoides striatus
Malacocercus terricolor
Cossyphus striatus
Crateropus canorus

সাতভনী (ইংৰাজী: Jungle Babbler, Turdoides striata), 'Leiothrichidae' পৰিয়ালৰ অন্তৰ্ভুক্ত এবিধ মজলীয়া আকাৰৰ চৰাইৰ প্ৰজাতি৷ ইয়াক সমগ্ৰ ভাৰত উপমহাদেশতে দেখিবলৈ পোৱা যায়৷ ই সাধাৰণতে ছয়ৰ পৰা দহটামান চৰাইৰ গোট হৈ চৰে৷

বিৱৰণ[সম্পাদনা কৰক]

Jungle Babbler perched on a branch, India.
Adult in Kawal, A.P., India.

The Jungle Babbler's habitat is forest and cultivation. This species, like most babblers, is non-migratory, and has short rounded wings and a weak flight. The sexes are identical, drably coloured in brownish grey with a yellow-bill making them confusable only with the endemic Yellow-billed Babblers of peninsular India and Sri Lanka. The upperparts are usually slightly darker in shade and there is some mottling on the throat and breast. [2]Young birds have a dark iris. Older birds have a pale creamy colour and it has been found that the iris has a dark epithelium which become invisible when the muscle fibres develop in the iris and make the dark basal colours invisible and then appear cream coloured.[3]

টেক্স'নমি[সম্পাদনা কৰক]

A foraging party, (Odisha)

The species was described in 1823 under the name of Cossyphus striatus and was based on a specimen from Bengal. There are several named geographically isolated subspecies that show plumage shade differences.[4] Former race rufescens of Sri Lanka is considered a full species. The widely accepted subspecies include:

  • striata ( Dumont de Sainte Croix, 1823) which is found over much of northern India south of the Himalayan foothills extending to Bhutan, Assam, Uttar Pradesh, Himachal Pradesh and northeastern Andhra Pradesh. The form in parts of Odisha, orissae, is said to be more rufous above[5] is usually subsumed into this.
  • sindiana ( Ticehurst, 1920) is a paler desert form that is found in the Indus plains of Pakistan and extends into Rajasthan and the Rann of Kutch in India
  • somervillei ( Sykes, 1832) is found in the northern Western Ghats south to the Goa Gap
  • malabarica ( Jerdon, 1845) is found in the southern Western Ghats
  • orientalis ( Jerdon, 1845) is found in peninsular India east of the Western Ghats

আচৰণ[সম্পাদনা কৰক]

Location : West Bengal
Nominate race from Kolkata allopreening

These birds are gregarious and very social. They sometimes form the core of a mixed-species foraging flock.[6]

খাদ্য[সম্পাদনা কৰক]

They feed mainly on insects, but also eats grains, nectar and berries.[7]

প্ৰজনন[সম্পাদনা কৰক]

They breed throughout the year; peak breeding in northern India has been noted between March–April and July–September. Birds are able to breed after their third year.[8] The nest is built halfway in a tree, concealed in dense masses of foliage. The normal clutch is three or four (but can be up to seven) deep greenish blue eggs. Birds fledge and females tend to leave their natal group after about two years.[8] Birds within a group often indulge in allopreening, play chases and mock fights.[9] When threatened by predators, they have been said to sometimes feign death.[10]

তথ্যসুত্ৰ[সম্পাদনা কৰক]

  1. BirdLife International (2012). "Turdoides striata". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. http://www.iucnredlist.org/apps/redlist/details/106007958/0। আহৰণ কৰা হৈছে: 5 July 2012. 
  2. Ali, S & S D Ripley (1996). Handbook of the birds of India and Pakistan. 6 (2 সম্পাদনা). Oxford University Press. পৃষ্ঠা. 224–230. 
  3. Andrew MI & RM Naik (1965). "Structural basis of the change of eye colour of the Jungle Babbler, Turdoides striatus (Dumont), during post-embryonic development.". Pavo খণ্ড 3: 72–74. 
  4. Ripley, S Dillon (1958). "Indian Birds. VII.". Postilla খণ্ড 35: 1–12. http://www.archive.org/stream/postilla150peab#page/n340/mode/1up/. 
  5. Ripley,S Dillon (1969). "The name of the Jungle Babbler Turdoides striatus (Aves) from Orissa.". J. Bombay Nat. Hist. Soc. খণ্ড 66 (1): 167–168. 
  6. Rasmussen, PC & JC Anderton (2005). Birds of South Asia: The Ripley Guide.. 2. Smithsonian Institution & Lynx Edicions. পৃষ্ঠা. 445–446. 
  7. Narang, ML & Lamba, BS (1986). "Food habits of jungle babbler Turdoides striatus (Dumont) and its role in the ecosystem". Indian Journal of Ecology খণ্ড 13 (1): 38–45. 
  8. উদ্ধৃতি ত্ৰুটি: অবৈধ <ref> টেগ; demog নামৰ refৰ বাবে কোনো পাঠ্য প্ৰদান কৰা হোৱা নাই
  9. Gaston, A. J. (1977). "Social behaviour within groups of jungle babblers Turdoides striatus". Animal Behaviour খণ্ড 25 (828–848): 828. doi:10.1016/0003-3472(77)90036-7. 
  10. Neelakantan,KK (1957). "Hypnotic behaviour of a White-headed Babbler (Turdoides striatus)". J. Bombay Nat. Hist. Soc. খণ্ড 54 (2): 460–461.  (Note: the reference uses the binomial of the Jungle Babbler)

লগতে চাওক[সম্পাদনা কৰক]

  • Andrews MI & RM Naik (1965) Some observations on flocks of the Jungle Babbler Turdoides striatus (Dumont) during winter. Pavo 3:47-54.
  • Naik,RM; Andrews,MI (1966) Pterylosis, age determination and moult in the jungle babbler. Pavo 4(1-2):48-57.
  • Andrews,MI; Naik,RM (1966) The body weight and the thyroid and gonadal cycles of the jungle babbler. Pavo 4(1&2):48-57.
  • Andrews,MI; Naik,RM (1972) The biology of the jungle babbler. Pavo 08(1&2):1-34.
  • Rana,BD (1972) Some observations on food of the Jungle Babbler, Turdoides striatus, and the Common Babbler, Turdoides caudatus in the Rajasthan Desert, India. Pavo 8(1&2):35-44.
  • Rana,DB (1985) Abnormality in the testis of Streptopelia decaocto and Turdoides striatus in the Rajasthan desert. Pavo 23(1&2):101-102.
  • Suresh,PK; Chaturvedi,CM (1986) Annual endocrine cycles in male babbler, Turdoides somerveillei. Pavo 24(1&2):43-54.
  • Parasharya,BM (1986) Early breeding date of Jungle Babbler in Gujarat. Pavo 24(1&2):117-118.
  • Inglis,CM (1936) The Bengal Jungle Babbler or "Seven Sisters," Turdoides terricolor terricolor (Hodgson). J. Darjeeling Nat. Hist. Soc. 10(4):117-123
  • Ali,S (1974) Jungle Babblers at Pali Hills, Bandra, Bombay 400050. Newsletter for Birdwatchers . 14(11):5-6.
  • R. Ray-Chaudhuri, T. Sharma, S. P. Ray-Chaudhuri (1969) A comparative study of the chromosomes of birds. Chromosoma 26(2):148-168 doi:10.1007/BF00326452
  • Mitra, Sarat Chandra (1926-27?) Studies in bird-myths:
    • No. {X}: On a probable aetiological myth about the jungle babbler;
    • No. {XI}: On an aetiological myth about the Indian house-crow;
    • No. {XII}: On three aetiological myths about the spots on the peacock's tail-feathers;
    • No. {XIII}: Quarterly Journal of the Mythic Society 17:63-64

বাহ্যিক সংযোগ[সম্পাদনা কৰক]