Purple cochoa

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Purple cochoa
Purple Cochoa Khangchendzonga National park West Sikkim India 08.11.2016.jpg
Male from West Sikkim
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Turdidae
Genus: Cochoa
Species:
C. purpurea
Binomial name
Cochoa purpurea
Hodgson, 1836

The purple cochoa (Cochoa purpurea) is a brightly coloured bird found in the temperate forests of Asia. It is a quiet and elusive bird species that has been considered to be related to the thrushes of family Turdidae or the related Muscicapidae (Old World flycatchers). They are found in dark forested areas and is found in the canopy, where it often sits motionless.

Contents

Description

This bird appears dark in the shade of the forest and the colours become clear only when it is lit by the sun. The crown is silvery blue and a black mask runs over the eye. A grey carpal patch is present at the base of the black wing feathers and a wing patch is prominent. The tail is silvery blue with a black terminal band. The male has dull purplish grey secondaries and coverts and the body is greyish while the female has rufous replacing the purple. [2] [3] [4]

An artist's illustration of both male and female. Cochoa purpurea.jpg
An artist's illustration of both male and female.

The genus name is from the Nepali word for the bird and was used by Brian Houghton Hodgson. [5] [6] The family position of the cochoas has been unclear with some sources suggesting that they belong to the Muscicapidae while others have suggested them to be in the family Turdidae. The latter suggestion has found more support in recent molecular studies. [7]

Distribution and habitat

It is found in Bangladesh, Bhutan, China, India, Laos, Myanmar, Nepal, Thailand, and Vietnam. In India, it is found along the Himalayas with the western limit about 100 km west of Musoorie. [8]

Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist montane forests.[ citation needed ]

Behaviour and ecology

The species is not very active and is found mainly in the canopy. The breeding season is May to July, when it builds a cup shaped nest in a fork. The nest is covered with moss, lichens and a white thread-like fungus which is said to be distinctive. Three pale sea-green eggs with some blotchy markings are laid and both sexes take turns in incubation. The birds are shy at the nest and slip away even when disturbances are afar. [9] The song consists of is a low whistle while other calls include a sit and soft trrrs. [2] Charles Inglis reported that the birds have an iora-like whistling call in the mornings and evenings. [10] These cochoas feed on berries, insects and molluscs. [9] [11] While picking fruits from trees they were observed behaving like flycatchers doing short sallies. [12]

Related Research Articles

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The thrushes are a passerine bird family, Turdidae, with a worldwide distribution. The family was once much larger before biologists reclassified the former subfamily Saxicolinae, which includes the chats and European robins, as Old World flycatchers. Thrushes are small to medium-sized ground living birds that feed on insects, other invertebrates and fruit. Some unrelated species around the world have been named after thrushes due to their similarity to birds in this family.

<span class="mw-page-title-main">Old World flycatcher</span> Family of birds

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<i>Cochoa</i> Genus of birds

The cochoas are medium-sized frugivorous, insectivorous and molluscivorous birds in the genus Cochoa. Their bright contrasting plumage patterns, sexual dimorphism and feeding habits made their systematic position difficult to ascertain in early times, Richard Bowdler Sharpe placed them with the Prionopidae in 1879 while many considered them as some kind of aberrant thrush. The genus was previously included in the Old World flycatcher family Muscicapidae but molecular phylogenetic studies have shown that it is more closely related to the thrush family Turdidae.

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<span class="mw-page-title-main">Black eagle</span> Species of bird

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<span class="mw-page-title-main">Purple sunbird</span> Species of bird

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<span class="mw-page-title-main">Indian robin</span> Species of bird

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<span class="mw-page-title-main">Kashmir flycatcher</span> Species of bird

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<span class="mw-page-title-main">White-bellied blue flycatcher</span> Species of bird

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<span class="mw-page-title-main">Grey-headed canary-flycatcher</span> Species of bird

The grey-headed canary-flycatcher, sometimes known as the grey-headed flycatcher, is a species of small flycatcher-like bird found in tropical Asia. It has a square crest, a grey hood and yellow underparts. They are found mainly in forested habitats where they often join other birds in mixed-species foraging flocks. Pairs are often seen as they forage for insects by making flycatcher-like sallies and calling aloud. Several subspecies are recognized within their wide distribution range. In the past the genus Culicicapa was considered to be an Old World flycatcher but studies have found them to belong to a new family designated as the Stenostiridae or fairy flycatchers that include the African genera Stenostira and Elminia.

<span class="mw-page-title-main">Indian blue robin</span> Species of bird

The Indian blue robin is a small bird found in the Indian Subcontinent. Formerly considered a thrush, it is now considered one of the Old World flycatchers in the family Muscicapidae. It was earlier also called the Indian blue chat. It is migratory, breeding in the forests along the Himalayas of Nepal, India, Myanmar and Bangladesh. They winter in the hill forests of the Western Ghats of India and in Sri Lanka.

<span class="mw-page-title-main">Black baza</span> Species of bird

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<span class="mw-page-title-main">Brown rock chat</span> Species of bird (Oenanthe fusca)

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<span class="mw-page-title-main">Nilgiri blue robin</span> Species of bird

The Nilgiri blue robin, also known as Nilgiri shortwing, white-bellied shortwing, Nilgiri sholakili or rufous-bellied shortwing is a species of passerine bird in the family Muscicapidae endemic to the Shola forests of the higher hills of southern India, mainly north of the Palghat Gap. This small bird is found on the forest floor and undergrowth of dense forest patches sheltered in the valleys of montane grassland, a restricted and threatened habitat.

<span class="mw-page-title-main">Green cochoa</span> Species of bird

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<span class="mw-page-title-main">Blue whistling thrush</span> Species of bird

The blue whistling thrush is a bird in the Old World flycatchers family Muscicapidae that is found in the mountains of Central Asia, South Asia, China and Southeast Asia. It is known for its loud human-like whistling song at dawn and dusk. The widely distributed populations show variations in size and plumage with several of them considered as subspecies. Like others in the genus, they feed on the ground, often along streams and in damp places foraging for snails, crabs, fruits and insects.

<span class="mw-page-title-main">White-bellied blue robin</span> Species of bird

The white-bellied blue robin or white-bellied sholakili, is a bird of the family Muscicapidae. It is endemic to the Shola forests of the higher hills of southern India. The Nilgiri blue robin and this species were once considered separate species, later lumped as sub-species of a single species (major) and elevated again to full species in 2005 by Pamela C. Rasmussen. The species was earlier thought to be related to the shortwings and placed in the genus Brachypteryx and later moved to Myiomela since species in the genus Brachypteryx shows marked sexual dimorphism. In 2017, a study found that this is a sister group of the flycatchers in the genera Niltava, Cyornis and Eumyias among others. It was then placed in newly erected genus Sholicola. This small bird is found on the forest floor and undergrowth of dense forest patches sheltered in the valleys of montane grassland, a restricted and threatened habitat.

References

  1. BirdLife International (2016). "Cochoa purpurea". IUCN Red List of Threatened Species . 2016: e.T22710144A94236723. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22710144A94236723.en . Retrieved 13 November 2021.
  2. 1 2 Rasmussen PC & JC Anderton (2005). Birds of South Asia: The Ripley Guide. Volume 2. Smithsonian Institution and Lynx Edicions. p. 371.
  3. Oates, EW (1890). Fauna of British India. Birds. Volume 2. Taylor and Francis, London. pp. 159–160.
  4. Hussain,SA; Waltner,Robert C (1975). "Occurrence of the Purple Cochoa Cochoa purpurea Hodgson, near Mussoorie, U.P." J. Bombay Nat. Hist. Soc. 72 (2): 552.
  5. Jobling, James A. (1991). A Dictionary of Scientific Bird Names . Oxford University Press. p.  57. ISBN   0-19-854634-3.
  6. Hodgson, B.H. (1836). "Description of two new species belonging to a new form of the Meruline Group of Birds, with indication of their generic character". Journal of the Asiatic Society of Bengal: 358–360.
  7. Sangster, G; Per Alström; Emma Forsmark & Urban Olsson (2010). "Multi-locus phylogenetic analysis of Old World chats and flycatchers reveals extensive paraphyly at family, subfamily and genus level (Aves: Muscicapidae)" (PDF). Molecular Phylogenetics and Evolution. 57 (1): 380–392. doi:10.1016/j.ympev.2010.07.008. PMID   20656044.
  8. Jamdar, Nitin (1986). "Notes on Orange Parrotbill (Paradoxornis nipalensis), Blackfaced Flycatcher-Warbler (Abroscopus schisticeps) and Purple Cochoa (Cochoa purpurea) from Garhwal Himalayas". J. Bombay Nat. Hist. Soc. 83 (2): 444–446.
  9. 1 2 Ali, S. & S.D. Ripley (1998). Handbook of the birds of India and Pakistan. Volume 9 (2nd ed.). Oxford University Press. pp. 17–19.
  10. Inglis, C.M (1935). "The Purple Thrush (Cochoa purpurea)". The Journal of the Darjeeling Natural History Society. 10 (1): 28.
  11. Baker, ECS (1924). Fauna of British India. Volume 2 (2nd ed.). Taylor and Francis, London. pp. 184–185.
  12. Viswanathan, Ashwin; Naniwadekar, Rohit (1 February 2015). "Diet and foraging behaviour of Purple Cochoa Cochoa purpurea in Namdapha National Park, India". Forktail. 30: 145–147.