Harleen singh at 10:42, 20 December 2025

2025-12-20T10:42:06Z

Ajay Kumar: Created a new article

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{{Short description|Species of bird}}
{{Use dmy dates|date=March 2020}}
{{Speciesbox
| name = Common hill myna
| image = Common Hill Myna, Satchari NP, Bangladesh 1.jpg
| image_caption = ''G. religiosa'' at [[Satchari National Park]], [[Habiganj District]], [[Bangladesh]]
| status = LC
| status_system = IUCN3.1
| status_ref = <ref name="iucn status 12 November 2021">{{cite iucn |author=BirdLife International |date=2018 |title=''Gracula religiosa'' |volume=2018 |page=e.T103878755A135865132 |doi=10.2305/IUCN.UK.2018-2.RLTS.T103878755A135865132.en |access-date=12 November 2021}}</ref>
| status2 = CITES_A2
| status2_system = CITES
| status2_ref = <ref>{{Cite web|title=Appendices {{!}} CITES|url=https://cites.org/eng/app/appendices.php|access-date=2022-01-14|website=cites.org}}</ref>
| genus = Gracula
| species = religiosa
| authority = [[Carl Linnaeus|Linnaeus]], [[10th edition of Systema Naturae|1758]]
| synonyms = ''Gracula indica'' (but see text)
| range_map = Gracula.svg
| range_map_caption = Distribution of various forms within the species complex
}}

The '''common hill myna''' ('''''Gracula religiosa'''''), sometimes spelled "mynah" and formerly simply known as the '''hill myna''' or '''myna bird''', is the [[myna]] most commonly sighted in [[aviculture]], where it is often simply referred to by the latter two names. It is a member of the [[starling]] [[family (biology)|family]] (Sturnidae), resident in hill regions of [[South Asia]] and [[Southeast Asia]]. The [[Sri Lanka hill myna]], a former [[subspecies]] of ''G. religiosa'', is now generally accepted as a separate [[species]] ''G. ptilogenys''. The [[Enggano hill myna]] (''G. enganensis'') and [[Nias hill myna]] (''G. robusta'') are also widely accepted as specifically distinct, and many authors favor treating the [[southern hill myna]] (''G. indica'') from the [[Nilgiris (mountains)|Nilgiris]] and elsewhere in the [[Western Ghats]] of India as a separate species.

The common hill myna is a popular [[talking bird]]. Its [[specific name (zoology)|specific name]] ''[[wikt:religiosus#Latin|religiosa]]'' may allude to the practice of teaching mynas to repeat prayers.<ref>{{cite journal | title = The Vocal Behaviour of the Indian Hill Mynah, ''Gracula religiosa'' |volume= 3 |last=Bertram|first=Brian| journal=Animal Behaviour Monographs|url=https://books.google.com/books?id=cqq3AAAAIAAJ|year=1970 |page=79|doi= 10.1016/S0066-1856(70)80003-6 |quote= The specific name ''religiosa'' probably results from the old practice, in Bengal particularly, of teaching captive Hill Mynahs to utter short prayers.}}</ref>

==Description==
This is a stocky jet-black [[myna]], with bright orange-yellow patches of naked skin and fleshy wattles on the side of its head and nape. At about 29 cm length, it is somewhat larger than the [[common myna]] (''Acridotheres tristis'').<ref name = argg8398>Ali & Ripley (1983), Grimmett ''et al.'' (1998)</ref>

It is overall green-glossed black [[plumage]], purple-tinged on the head and neck. Its large, white wing patches are obvious in flight, but mostly covered when the bird is sitting. The bill and strong legs are bright yellow, and there are yellow [[Wattle (anatomy)|wattles]] on the nape and under the eye. These differ conspicuously in shape from the naked eye-patch of the common myna and [[bank myna]] (''A. ginginianus''), and more subtly vary between the different hill mynas from [[South Asia]]: in the common hill myna, they extend from the eye to the nape, where they join, while the Sri Lanka hill myna has a single wattle across the nape and extending a bit towards the eyes. In the southern hill myna, the wattles are separate and curve towards the top of the head. The Nias and Enggano hill mynas differ in details of the facial wattles, and size, particularly that of the bill.<ref name = argg8398 />

Sexes are similar; juveniles have a duller bill.<ref name = argg8398 />

With the southern, Nias and Enggano hill mynas as separate species, the common hill myna, ''Gracula religiosa'', has seven [[subspecies]], which differ only slightly. In taxonomic order, they are:<ref>Sankaran (1998), elitparrots.ru (2008), Clements (2007), Dickinson (2003)</ref><ref name=":0">{{Cite web |title=Nuthatches, Wallcreeper, treecreepers, mockingbirds, starlings, oxpeckers – IOC World Bird List |url=https://www.worldbirdnames.org/new/bow/nuthatch/ |access-date=2023-01-27 |website=www.worldbirdnames.org}}</ref>
* ''G. r. peninsularis'' [[Hugh Whistler|Whistler]] & [[Norman Boyd Kinnear|Kinnear]], 1933 – the '''Bastar hill myna'''; central India (the state bird of Chhattisgarh, India)
* ''G. r. intermedia'' [[Arthur Hay, 9th Marquess of Tweeddale|Hay]], 1845 – northwestern [[Indochina]] and adjacent northeastern [[India]] and southern [[China]]
* ''G. r. andamanensis'' ([[Robert Cecil Beavan|Beavan]], 1867) – the '''Andaman hill myna'''; the [[Andaman Islands|Andaman]] and [[Nicobar Islands]]
* ''G. r. religiosa'' [[Carl Linnaeus|Linnaeus]], 1758 – the '''eastern hill myna'''; the [[Greater Sundas]] (except [[Sulawesi]]) and [[Peninsular Malaysia]]
* ''G. r. miotera'' [[Harry C. Oberholser|Oberholser]], 1917 – the '''Simeulue hill myna'''; [[Simeulue|Simeulue Island]]. Possibly [[extinct in the wild]].
* ''G. r. batuensis'' [[Otto Finsch|Finsch]], 1899 – the '''Batu hill myna'''; the [[Batu Islands|Batu]] and [[Mentawai Islands]]
* ''G. r. palawanensis'' ([[Richard Bowdler Sharpe|Sharpe]], 1890) – the '''Palawan hill myna'''; [[Palawan]] in the [[Philippines]]

A 2020 study found that the subspecies ''G. religiosa miotera'' likely represents a distinct species and was likely driven to extinction in the wild in the late 2010s due unsustainable collecting for the [[wildlife trade]]. The paper recommends rescuing the last genetically pure captive individuals for the purpose of [[captive breeding]]. The [[International Ornithologists' Union|International Ornithological Congress]] tentatively recognises it as a subspecies.<ref name=":0" /><ref>{{Cite journal|last1=Ng|first1=Dominic Y. J.|last2=Švejcarová|first2=Tereza|last3=Sadanandan|first3=Keren R.|last4=Ferasyi|first4=Teuku Reza|last5=Lee|first5=Jessica G. H.|last6=Prawiradilaga|first6=Dewi M.|last7=Ouhel|first7=Tomáš|last8=Ng|first8=Elize Y. X.|last9=Rheindt|first9=Frank E.|date=2021|title=Genomic and morphological data help uncover extinction-in-progress of an unsustainably traded hill myna radiation|journal=Ibis|language=en|volume=163|issue=1|pages=38–51|doi=10.1111/ibi.12839|issn=1474-919X|doi-access=free}}</ref>

===Vocalisations===
[[File:Gracula religiosa.ogg|thumb|Calls recorded in Thailand]]
The common hill myna is often detected by its loud, shrill, descending whistles followed by other calls. It is most vocal at dawn and dusk, when it is found in small groups in forest clearings high in the canopy.<ref name = argg8398 />

Both sexes can produce an extraordinarily wide range of loud calls – whistles, wails, screeches, and gurgles, sometimes melodious and often very human-like in quality. Each individual has a repertoire of three to 13 such call types, which may be shared with some near neighbours of the same sex, being learned when young. Dialects change rapidly with distance, such that birds living more than 15 km apart have no call-types in common with one another.<ref name = argg8398 />

Unlike some other birds, such as the [[greater racket-tailed drongo]] (''Dicrurus paradiseus''), the common hill myna does not imitate other birds in the wild, although it is a widely held misconception that they do. On the other hand, in captivity, they are among the most renowned mimics, the only bird, perhaps, on par with the [[grey parrot]] (''Psittacus erithacus''). They can learn to reproduce many everyday sounds, particularly the human voice, and even whistled tunes, with astonishing accuracy and clarity.<ref>Klatt & Stefanski (1974), Klingholz (1979)</ref>

==Distribution and ecology==
[[File:Common Hill Myna (Gracula religiosa) foreplay at Jayanti, Duars, West Bengal W Picture 369.jpg|thumb|left|Courting pair [[allopreening]] at [[Jayanti (village)|Jayanti]] in the [[Buxa Tiger Reserve]], [[West Bengal]], [[India]]]]
This [[myna]] is a resident breeder from [[Kumaon division]] in [[India]] (80° E [[longitude]]) east through [[Nepal]], [[Sikkim]], [[Bhutan]] and [[Arunachal Pradesh]], the lower [[Himalayas]], [[terai]] and foothills up to 2,000 m [[Above mean sea level|ASL]]. Its range continues east through [[Southeast Asia]] northeastwards to southern [[China]], and via [[Thailand]] southeastwards across northern [[Indonesia]] to [[Palawan]] in the [[Philippines]]. It is virtually extinct in [[Bangladesh]] due to [[habitat destruction]] and [[overexploitation]] for the [[pet trade]]. A [[feral]] population on [[Christmas Island]] has likewise disappeared. Introduced populations exist in [[Saint Helena]], [[Puerto Rico]] and perhaps in the mainland United States and possibly elsewhere; [[feral]] birds require at least a warm [[subtropical]] climate to persist.<ref name = argg8398 />

This myna is almost entirely arboreal, moving in large, noisy groups of half a dozen or so, in tree-tops at the edge of the forest. It hops sideways along the branch, unlike the characteristic jaunty walk of other mynas. Like most starlings, the hill myna is fairly [[Omnivore|omnivorous]], eating [[fruit]], [[nectar]] and [[insect]]s.<ref name = argg8398 />

They build a nest in a hole in a tree. The usual [[Clutch (eggs)|clutch]] is two or three [[Egg (biology)|egg]]s.<ref name = argg8398 /> There is no sexual dimorphism in these birds, which results in a limited possibility of choosing the sex to work with for mating.<ref>Mete A. (2003)</ref>

===Pet trade and conservation===
[[File:Gracula religiosa robusta-02.JPG|thumb|Adult at [[Jurong Bird Park]], [[Singapore]]]]
[[File:Gracula religiosa MHNT 227 Jardin des plantes de Paris.jpg|thumb|Eggs]]
The hill mynas are popular cage birds, renowned for their ability to imitate speech. The widely distributed common hill myna is the one most frequently seen in [[aviculture]]. Demand outstrips [[captive breeding]] capacity, so they are rarely found in [[pet]] stores and usually purchased directly from breeders or importers who can certify the birds are traded legally.{{fact|date=March 2020}}

This species is widely distributed and locally common, and if adult stocks are safeguarded, it is able to multiply quickly. On a worldwide scale, the [[IUCN]] thus considers the common hill myna a Species of [[Least Concern]]. But in the 1990s, nearly 20,000 wild-caught birds, mostly adults and juveniles, were brought into trade each year. In the central part of its range, ''G. r. intermedia'' populations have declined markedly, especially in [[Thailand]], which supplied much of the thriving Western market. Its neighbor countries, from where exports were often limited due to political or military reasons, nevertheless supplied a burgeoning domestic demand, and demand in the entire region continues to be very high. In 1992, Thailand had the common hill myna put on [[CITES Appendix III]], to safeguard its stocks against collapsing. In 1997, at the request of the [[Netherlands]] and the Philippines, the species was uplisted to [[CITES Appendix II]]. The [[Andaman and Nicobar Islands]] [[subspecies]] ''G. r. andamanensis'' and (if valid) ''G. r. halibrecta'', described as "exceedingly common" in 1874, qualified as [[Near Threatened]] in 1991. The former is not at all common anymore in the [[Nicobar Islands]] and the latter—if distinct—has a very limited range.<ref>Sankaran (1998), BLI (2008)</ref>

Elsewhere, such as on the Philippines and in [[Laos]], the decline has been more localized. It is also becoming increasingly rare in the regions of northeastern [[India]] due to capture of [[fledged]] birds for the [[illegal pet trade]]. In the [[Garo Hills]] region, however, the locals make artificial nests of a split-[[bamboo]] framework covered with grass, and put them up in accessible positions in tall trees in a forest clearing or at the edge of a small village to entice the mynas to breed there. The villagers are thus able to extract the young at the proper time for easy hand-rearing, making common hill myna farming a profitable, small-scale [[cottage industry]]. It helps to preserve the [[Natural environment|environment]], because the breeding birds are not removed from the population, while [[habitat destruction]] is curtailed because the mynas will desert areas of extensive [[logging]] and prefer more natural forest to [[plantation]]s. As the mynas can be somewhat of a [[Pest (organism)|pest]] of fruit trees when too numerous, an additional benefit to the locals is the inexpensive means of controlling the myna population: failing stocks can be bolstered by putting out more nests than can be harvested, while the maximum proportion of [[nestling]]s are taken when the population becomes too large.<ref>Ali & Ripley (1983), BLI (2008)</ref>

==See also==
*[[Talking birds]]

==Footnotes==
{{Reflist}}

==References==
* [[Salim Ali (ornithologist)|Ali, Salim]] & [[Sidney Dillon Ripley]] (1983). Bird Numbers 1015-1017 [Hill mynas]. ''In: Handbook of the Birds of India and Pakistan'' (2nd ed., vol. 5): 191–194. Oxford University Press, New Delhi.
* Clements, J. F. (2007). ''The Clements Checklist of the Birds of the World''. 6th edition. Christopher Helm. {{ISBN|978-0-7136-8695-1}}.
* Dickinson, E. C. (editor) (2003). ''The Howard and Moore Complete Checklist of the Birds of the World''. 3rd edition. Christopher Helm. {{ISBN|0-7136-6536-X}}.
* elitparrots.ru (2008). [https://web.archive.org/web/20181220230423/http://elitparrots.ru/mauna.html Священная майна (''Gracula religiosa'')] ["Hill Myna (''G. religiosa'')"]. Version of 2008-JAN-22. Retrieved 2009-MAY-22. [in Russian]
* Grimmett, Richard; Inskipp, Carol & Inskipp, Tim (1998): ''Birds of the Indian Subcontinent''. [[Helm Identification Guides|Christopher Helm]], London. {{ISBN|0-7136-4004-9}}
* {{cite journal | last1=Klatt | first1=Dennis H. |author-link=Dennis H. Klatt| last2=Stefanski | first2=Raymond A. | title=How does a mynah bird imitate human speech? | journal=[[The Journal of the Acoustical Society of America]] | publisher=Acoustical Society of America (ASA) | volume=55 | issue=4 | year=1974 | issn=0001-4966 | doi=10.1121/1.1914607 | pages=822–832| pmid=4833078 }}
* {{cite journal | last=Klingholz | first=F. | title=Supplement to ''How does a mynah bird imitate human speech?'' [J. Acoust. Soc. Am. 55, 822–832 (1974)] | journal=The Journal of the Acoustical Society of America | publisher=Acoustical Society of America (ASA) | volume=65 | issue=2 | year=1979 | issn=0001-4966 | doi=10.1121/1.382314 | pages=537}}
* Mete A. (2003). "Iron metabolism in mynah birds (''Gracula religiosa'') resembles human hereditary haemochromatosis" ''[https://doi.org/10.1080/03079450310001610659 Avian Pathology]'' '''32'''(#6): 625–632.
* Sankaran, R. (1998). An annotated list of the endemic avifauna of the Nicobar islands. ''[[Forktail (journal)|Forktail]]'' '''13''': 17–22. [https://web.archive.org/web/20080828045940/http://www.orientalbirdclub.org/publications/forktail/13pdfs/Sankaran-Nicobar.pdf PDF fulltext]

==External links==
*{{Commonsinline|Gracula religiosa}}

{{Taxonbar|from=Q337416}}

[[Category:Gracula|common hill myna]]
[[Category:Talking birds]]
[[Category:Birds of Eastern Himalaya]]
[[Category:Birds of East India]]
[[Category:Birds of Hainan]]
[[Category:Birds of South China]]
[[Category:Birds of Southeast Asia]]
[[Category:Birds described in 1758|common hill myna]]
[[Category:Taxa named by Carl Linnaeus|common hill myna]]
[[Category:Symbols of Chhattisgarh]]
[[Category:Symbols of Meghalaya]]

Common hill myna - Revision history

Harleen singh at 10:42, 20 December 2025

Ajay Kumar: Created a new article