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Indian peafowl

(Redirected from Blue Peafowl)
"Common peacock" redirects here. For the butterfly with this common name, see Papilio polyctor.

The Indian peafowl (Pavo cristatus), also known as the common peafowl or blue peafowl, is a peafowl species native to the Indian subcontinent. While it originated in the Indian subcontinent, it has since been introduced to many other parts of the world. Male peafowl are referred to as peacocks, and female peafowl are referred to as peahens, although both sexes are often referred to colloquially as a "peacock".

Indian peafowl
Peacock in Nagarhole National Park
Peahen in Bandipur National Park
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Galliformes
Family: Phasianidae
Genus: Pavo
Species:
P. cristatus
Binomial name
Pavo cristatus
Map showing native range

The Indian peafowl displays a marked form of sexual dimorphism. The brightly coloured male has a blue coloured head with a fan-shaped crest and is best known for their long train. The train is made up of elongated upper-tail covert feathers with colourful eyespots. These stiff feathers are raised into a fan and quivered in a display during courtship. The peahen is predominantly brown in colour, with a white face and iridescent green lower neck, and lack the elaborate train. There are several colour mutations of the Indian peafowl including the leucistic white peafowl.

Despite the length and size of the covert feathers, the peacock is still capable of flight. The peafowl lives mainly on the ground in open forests or on cultivable lands where it forages for berries and grains, and also preys on snakes, lizards and small rodents. It makes loud calls, which makes it easier to detect, and are often used to indicate the presence of a predator in the forest areas. It forages on the ground in small groups and usually escapes on foot through undergrowth and avoids flying, though it flies into tall trees to roost.

The function of the Indian peacock's elaborate train has been debated for more than a century. In the 19th century, Charles Darwin found it a puzzle, hard to explain through ordinary natural selection. His later explanation, sexual selection, is widely but not universally accepted. In the 20th century, Amotz Zahavi argued that the train was a handicap, and that males were honestly signalling their fitness in proportion to the splendour of their trains. Despite extensive study, opinions remain divided on the mechanisms involved.

The Indian peafowl is listed as Least Concern on the IUCN Red List. It is the national bird of India and venerated in Hindu and Greek mythology.

Taxonomy and etymology

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Carl Linnaeus assigned the technical name of Pavo cristatus (means "crested peafowl" in classical Latin) in his work Systema Naturae in 1758.[2] The Latin word originated from the Greek word taos derived from Persian tavus, which is said to have come from the Tamil word tokei.[3] The Ancient Hebrew word tuki might have been derived from Tamil tokei or the Egyptian tekh.[4]

The earliest usage of the word in written English was from the 14th century where Geoffrey Chaucer (1343–1400) used the word in a simile "proud a pekok" in his epic poem Troilus and Criseyde.[5][6] Various spelling variants included peacock, pacok, pecok, pekok, pokok, and pocok among others.[3][6]

The Sanskrit word Mayura is derived from the root mi for kill describing the bird as a "killer of snakes".[7] It is likely that the Sanskrit term is a borrowing from Proto-Dravidian *mayVr or a regional Wanderwort, that came from mayil, the Tamil word for peacock.[8][9] The Pali word Mora was probably derived from Sanskrit, and was used in the naming of the Moriya region, which later gave rise to Chandragupta Maurya of the Maurya Empire.[10]

Description

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Head of a male Indian peafowl, showing its fan shaped crest.

The Indian peafowl's size, color and shape of the crest make them easily identifiable within their native distribution range.[11] It displays a marked form of sexual dimorphism.[12][13] A male peafowl or peacock is a larger sized bird with an average bill to tail length of 100–120 cm (40–46 in) and as much as 200–230 cm (78–90 in) to the end of a fully grown train. It weighs 4.1–5.2 kg (9–11.5 lb) and is amongst the heaviest birds in Phasianidae. The male has a metallic blue crown with short and curled, blue-greenish head feathers. It has a fan-shaped crest with bare black shafts and tipped with bluish-green webbing. A white stripe above the eye and a crescent shaped white patch below the eye are formed by bare white skin. The lore, chin and throat are covered with greenish feathers. It has a long blue neck with scaly bronze-green feathers with black and copper markings in the back. The scapular region and wings are made of chestnut colored primary feathers with black secondaries. The tail is dark brown with glossy green chest, buff thighs, and blackish-brown abdomen and tail coverts.[14][15]

 
Close-up of the tail covert, showing the distinct eye-spot.

The male is best known for its elongated train, which extend from the rump. The train is made up of elongated upper tail coverts, which are bronze-green train with the outermost and longer feathers ending up with an elaborate eye-spot. The eye-spots consist of a purplish-black, heart-shaped nucleus, enclosed by blue and an outer copper rim, which is surrounded by alternating green and bronze. A few of the outer feathers lack the spot and end in a crescent shaped black tip.[14][15] The feathers of the train does not have colored pigments and the colorization is a result of the micro-structure of the feathers and the optical phenomena involved.[16] The male has a spur on the leg above the hind toe. The train feathers and the tarsal spur of the male starts developing only in the second year of its life. The trains are not fully developed until the age of four.[17] The train feathers of the male Indian peafowl are also moulted every year, usually starting at the end of the monsoon in August or September and are fully developed by February to March.[14][17] The moult of the flight feathers may be spread out across the year.[18]

The females or peahens, are smaller at around 15 in (38 cm) in length and weigh 2.7–4.1 kg (6–9 lb). The peahen has a rufous-brown head with a crest, whose tips are chestnut colored and edged with green. The upper body is brownish with pale mottling and the primaries, secondaries and tail are dark brown. The lower neck is metallic green with dark brown breast feathers glossed with green and whitish underparts. Both the sexes have dark brown eyes, brown colored beak and legs. Young males also resemble the females with chestnut colored primaries.[14][15]

Mutations and hybrids

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A melanistic black-shouldered Indian peafowl from Naturalis Biodiversity Center, Leiden.
 
A displaying leucistic white Indian peafowl.

There are several colour mutations of Indian peafowl. These very rarely occur in the wild, but selective breeding has made them common in captivity. The black-shouldered mutation was initially considered as a subspecies or even a separate species of the Indian peafowl (P. nigripennis).[19] English naturalist Charles Darwin (1809–1882) presented firm evidence for it being a variety under domestication, which is now well established and accepted. It was important for Darwin to prove that it was a colour variation rather than a wild species as it was contrary to his theory of slow modification by natural selection in the wild.[20] In this genetic variation, the adult male is melanistic with black wings. The young birds are creamy white with fulvous-tipped wings. The gene which produces melanism in the male, causes s a dilution of colour in females, which have creamy white and brown markings.[14][21] Other forms of mutations include the pied and white mutations, which are the result of allelic variation at specific loci.[22][23]

Crosses between a male green peafowl (Pavo muticus) and a female Indian peafowl (P. cristatus) produce a stable hybrid called a "Spalding", named after Keith Spalding, a bird fancier from California.[24] There can be problems if birds of unknown pedigree are released into the wild, as the viability of such hybrids and their offspring is often reduced as per Haldane's rule.[25][26]

Distribution and habitat

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The Indian peafowl is found across bushy lands in India and Sri Lanka. Pictured is a female with chicks.

The Indian peafowl is a resident breeder in the Indian subcontinent and is found across most of India and Sri Lanka. In India, it is found across the country from the Indus valley in the north-west to Assam in the north-east, and from Himalayas in the north to the southern tip, except for the marshlands of Sunderbans in East India. In India, it is found up to elevations of 5,000 ft (1,500 m) in the north and upto 6,000 ft (1,800 m) in the mountains of the south. In Sri Lanka, it largely inhabits the drier lowland areas. It is generally found in forests, small hills, and bushy areas near water sources. It also occupies cultivable lands and live in a semi-domesticated state in human habitations.[14][15][27] The peafowl has since been introduced in many other parts of the world and has become feral in some areas.[28][29] It was supposedly introduced into Europe by Alexander the Great, while the bird might have been introduced earlier and had reached Athens by 450 BCE.[30][31]

The first whole-genome sequencing of the Indian peafowl identified 15,970 protein-coding sequences and was found to have less repetitive DNA (8.62%) than that of the chicken genome (9.45%). Studies have suggested that the population suffered at least two bottlenecks (four mya and 450,000 years ago), which resulted in a severe reduction in its effective population size.[32]

Behaviour and ecology

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An Indian peacock in flight.

The Indian peafowl forages on the ground in small groups, known as musters, that usually have a single peacock and three to five peahens. After the breeding season, the flocks tend to be made up only of females and young. It is found in the open early in the mornings and tends to rest under cover during the heat of the day. It is often sighted dust-bathing at dusk.[28] It roosts on tall trees at night, but may sometimes make use of rocks or buildings.[15][33][34] Birds usually arrive at their roosting sites during the dusk and call frequently before taking their positions.[35] Despite its size, the Indian peafowl is capable of flight. However, it rarely flies and often escapes by running on foot through the undergrowth when perturbed or disturbed. When it takes off, it uses regular, slower flaps to maintain flight rather than gliding.[15][28]

Feeding

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The Indian peafowl is found lazily feeding in the open early in the mornings, and might move to cultivated lands to feed during the mornings and the evenings.[15] The groups often walk in single file to the nearby waterholes for a drink.[28] The birds often congregate near human habitats and might be fed by humans.[15] It is omnivorous and feeds on grass, seeds, flowerbuds, fruits, insects, and small reptiles.[14][36] It feeds on smaller snakes but keeps its distance from larger ones.[37] It also feeds on a wide range of crops such as groundnut, tomato, paddy, chili and bananas in cultivated areas.[38] In Western India, a large percentage of its food is made up of the fallen berries of Zizyphus.[39] Around human habitations, it feeds on food scraps and even human excreta.[28]

Communication

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Call of Indian peafowl

The most common calls are a loud pia-ow or may-awe with the frequency of calling increasing before the monsoon season. It raises loud sounds when alarmed or disturbed and are often used to indicate the presence of a predators such as the tiger in the forests. It also makes other calls such as a rapid series of ka-aan..ka-aan or a rapid kok-kok. It often emits an explosive low-pitched honk! when agitated.[15][28][38] It might even call at night when alarmed and neighboring birds may call in a relay like series. Nearly seven different call variants have been identified apart from six variants of alarm calls that are commonly produced by both the sexes.[40]

Breeding

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A male courting a female.

Indian peacocks are polygamous .[14] The peafowl usually reaches sexual maturity at the age of two to three years old.[41] The breeding season may be spread out over the entire year and is more common during the monsoon months of June to August.[15] Several males may congregate at a lek site and these males are often closely related.[42] Males at leks maintain small territories next to each other and allow females to visit them. Males make no attempt to guard harems and females do not favour specific males.[43]

 
Egg from the collection of Museum Wiesbaden.

A peacock use its ornate train in a courtship display, wherein it raises the tail feathers into an arched fan and quivers them.[14] The wings are held half open and drooped and it periodically vibrates the long feathers, producing a ruffling sound. It faces the peahen initially and might turn around to display the tail.[28] The peacock may also freeze over food to invite a peahen in a form of courtship feeding.[44] While peacocks may also display even in the absence of peahens, it is usually done close to the females. When a peacock is displaying, peahens appear not to show any interest and usually continue their foraging.[38]

The nests are usually shallow hollow scrapes on the ground lined with leaves, sticks and other debris. The peafowl might also nest on crevices in the buildings, and disused nests of vultures.[15][45] The female lays a clutch of three to eight oval shaped eggs. The eggs measure about 2.45–3 in (6.2–7.6 cm) in length and 1.42–2.2 in (3.6–5.6 cm) in width. They appear polished and have thick shells with pits and pores. The color varies from pale white to buff or reddish-brown. The males take no part in hatching or rearing the young.[15] However, isolated unusual instance of a male incubating a clutch of eggs has been reported.[28][46] The eggs are incubated by the females for about 28 days.[47] The chicks are nidifugous and follow the mother around after hatching. Downy young may sometimes climb on their mothers' back and the female may carry them in flight to a safe tree branch.[48]

Sexual selection

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Abott Thayer's suggested that the function of the ornate tail was camouflage via his painting (1907).

The Indian peacock is known for its brighter and elaborate colours, compared to the much duller peahen, which has been a puzzle to scientists. Charles Darwin failed to see an adaptive advantage for the extravagant tail which seemed only to be an encumbrance. He wrote to botanist Asa Gray, "the sight of a feather in a peacock's tail, whenever I gaze at it, makes me sick!". He developed the principle of sexual selection to explain the problem, however, though not everyone accepted the theory.[49] In 1907, American artist Abbott Handerson Thayer showed in his painting that the eyespots helped form a disruptive camouflage.[50] In his 1909 book Concealing-Coloration in the Animal Kingdom, he denied the possibility of sexual selection and argued that essentially all forms of animal coloration had evolved as camouflage.[51] The theory was criticized by former U.S. President Theodore Roosevelt.[52]

In the 1970s, Israeli biologist Amotz Zahavi proposed a possible resolution to the apparent contradiction between natural selection and sexual selection. He argued that the peacock honestly signalled the handicap of having a large and costly train. However, the mechanism may be less straightforward than it seems and the cost could could be that the hormones that enhance feather development also results in the depression of the immune system.[53][54] Ronald Fisher's runaway model proposed a positive feedback between female preference for elaborate trains and development of the elaborate train itself. However, this model assumes that the male train is a relatively recent evolutionary adaptation and a molecular phylogeny study shows the opposite that the most recently evolved species is actually the least ornamented one.[55] This finding suggests a chase-away sexual selection in which females evolved resistance to the male ploy of elaborate trains".[56]

A study on the feral population of Indian peafowl at Whipsnade Wildlife Park in southern England, showed that the number of eyespots in the train predicted a male's mating success, and this success could be manipulated by cutting the eyespots off some of the male's ornate feathers. Furthermore, the study also found that the chicks fathered by more ornamented males weighed more than those fathered by less ornamented males, which indicated an increased survival ability.[57] However, recent studies have failed to find a relation between the number of displayed eyespots and mating success.[58]

 
Close up of the open train of an Indian peacock, showing its eye-spots.

A seven-year Japanese study of free-ranging peafowl came to the conclusion that female peafowl do not select mates solely on the basis of their trains and it is an obsolete signal for which female preference has already been "lost or weakened". It found no evidence that peahens expressed any preference for peacocks with more elaborate trains, trains having more ocelli, a more symmetrical arrangement, or greater length. It determined that the peacock's train was not the universal target of female mate choice, and do not correlate to male physical conditions. It argued that the removal of eyespots substantially changed the appearance of male peafowls, and it was likely that the females mistook these males for sub-adults, or perceived that the males were physically damaged. Moreover, in a feral peafowl population, there is little variation in the number of eyespots in adult males as it is rare for adult males to lose a significant number of eyespots and hence, it might not form the basis for sexual selection.[59] The British research team argued that alternative explanations for these results had been overlooked, and concluded that female choice might indeed vary in different ecological conditions.[57]

A 2010 study on a natural population of Indian peafowls in Northern India proposed a "high maintenance handicap" theory. It stated that only the fittest males can afford the time and energy to maintain a long tail and the long train is an indicator of good body condition, which results in greater mating success.[60] While train length seems to correlate positively with major histocompatibility complex diversity in males, females do not appear to use train length to choose males.[61] Another study in France brought up two possible explanations with the first explanation stating that there might be a genetic variation of the trait of interest under different geographical areas due to a founder effect and/or a genetic drift. The second explanation suggested that "the cost of trait expression may vary with environmental conditions," so that a trait that is indicative of a particular quality may not work in another environment.[57] A 2013 study that tracked the eye movements of peahens responding to male displays found that the peahens looked in the direction of the upper train of feathers only when at long distances and that they looked only at the lower feathers when males displayed close to them. The rattling of the tail and the shaking of the wings helped in keeping the attention of females.[62]

 
A peahen with chicks. Chicks are more prone to predation than adults.

Lifespan and mortality

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The Indian peafowl is known to live for up to 23 years in captivity. However, it is estimated to live for only about 15 years in the wild.[63] Large predators such as tiger, leopard, hyena, dhole, and golden jackal, can ambush an adult Indian peafowl. An adult peafowl is difficult to capture since it can usually escape these ground predators by flying into trees.[64][65][66] Smaller birds can be sometimes hunted by large birds of prey such as changeable hawk-eagle and rock eagle-owl.[67][68] Chicks are more prone to predation than adult birds. Adults living near human habitations might sometimes hunted by domestic dogs or by humans in some areas.[38] The peafowls often forage in groups as it provides some safety as there are more eyes to look out for predators.[69]

Threats and conservation

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A male Indian peafowl at Yala National Park in Sri Lanka.

The Indian peafowl is widely distributed across India and Sri lanka, with introduced feral colonies in many parts of the world. Conservative estimates of the population in 2002 put them at more than 100,000.[70] While the exact population size is unknown, it is not believed to be under decline. Hence, it is classified as least concern by the IUCN.[71] Poaching of peacocks for their meat and feathers and accidental poisoning by feeding on pesticide treated seeds are known threats to wild birds.[72][73] It is also hunted in some areas for usage in folk remedies.[38] The birds have been part of the agricultural ecosystem for centuries, where they aid in seed dispersal and feed on pests such as insects and small rodents. However, the birds can be a nuisance to agriculture as they trample crops and overeat the grains. A 2018 study found that there can be a 40% decrease in yield in paddy fields due to the damage caused by the birds.[28][74][75] In urban areas, they can damage plants in gardens, attack their reflections (thereby breaking glass and mirrors), perch and scratch cars or leave their droppings.[76]

The Indian peafowl is protected both culturally and by law in India and Sri lanka.[15][75] Methods to identify if feathers have been plucked or have been shed naturally have been developed, as Indian law allows only the collection of feathers that have been shed.[77] Various methods have been employed to restrict access to the farmlands such as usage of jute fencing and application of non-poisonous pesticides to reduce fatality of the birds.[78] Cities have been introduced peafowl management programmes, which include education on how to prevent the birds from causing damage while treating the birds humanely.[79][80][81] Various wildlife sanctuaries have been established in India such as Adichunchanagiri, Choolannur, and Viralimalai for the protection of the species.[82] The Indian peafowl also breed readily in captivity and various zoos, parks, and bird-fanciers maintain breeding populations across the world.[83][84][85]

In culture

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Kartikeya with his consorts riding a peacock, painting by Raja Ravi Varma.

The Indian peafowl has been used in numerous mythological and contemporary representations.[28] It is designated as the national bird of India.[86] In the Indian subcontinent, many Hindu deities are associated with the bird, and it is frequently depicted in various temple art, mythology, poetry, folk music and traditions.[87] The Hindu war god Kartikeya is depicted as using an Indian peacock named Parvani as his vahana.[88] Hindu god Krishna is often depicted with an Indian peacock feather on his headband. The Ramayana describes that the head of the Devas, Indra, who unable to defeat Ravana, sheltered under the wing of peacock and was later blessed it with a "thousand eyes" and fearlessness from serpents.[7] Another mythological story narrates that Indra was cursed with a thousand ulcers and was transformed into a peacock with a thousand eyes before his curse was removed by Vishnu.[89] In Buddhist philosophy, the Indian peacock represents wisdom.[90]

Numerous uses of the bird's parts as an antidote to snake venom in Ayurveda and other folk remedies have been documented.[91] It is part of folklore with beliefs such as the impregnation of peahens orally by means of the tears of the peacocks. [92][93] In Greek mythology, the origin of the Indian peacock's plumage is explained in the tale of Hera and Argus.[24] The main figure of Yezidis, Melek Taus, is commonly depicted as a peacock.[94][95] A golden peacock is considered as a symbol of Ashkenazi Jewish culture, and is the subject of several folktales and songs in Yiddish.[96][97] In medieval times, knights in Europe took a "vow of the peacock" and decorated their helmets with its plumes. In Robin Hood stories, the titular archer uses arrows fletched with peacock feathers. Peacock feathers were buried with Viking warriors.[98]

The birds were often kept in menageries and as ornaments in large gardens and estates in the middle ages. In 1526, the legal issue as to whether peacocks were wild or domestic fowl was thought sufficiently important for Cardinal Wolsey to summon all the English judges to give their opinion, which was that they are domestic fowl.[99] Indian peacocks were frequently used in European heraldry with the peacocks most often depicted as facing the viewer and with the tails displayed. In this pose, the peacock is referred to as being "in his pride". Peacock tails, in isolation from the rest of the bird, are rare in British heraldry, but are used frequently in German systems.[100] The Indian peacock feathers are used in many rituals and ornamentation and its motifs are widespread in architecture, coinage, textiles and modern items of art and utility.[31] Indian peacock motifs are widely used even today such as in the logos of the NBC television network and the Sri Lankan Airlines.[101][102]

The term "peacocking" is often used as a means of depicting pride in English language and is used to describe someone who is very proud or gives a lot of attention to his/her clothing.[3][103] In Australia, it referred to the practice of buying up the best pieces of land so as to render the surrounding lands valueless.[104]

References

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  1. ^ BirdLife International (2016). "Pavo cristatus". IUCN Red List of Threatened Species. 2016: e.T22679435A92814454. doi:10.2305/IUCN.UK.2016-3.RLTS.T22679435A92814454.en. Retrieved 2 January 2022.
  2. ^ Ian Fraser; Jeannie Gray (2013). Australian Bird Names: A Complete Guide. CSIRO Publishing. p. 7. ISBN 978-0-643-10470-9.
  3. ^ a b c Robert Hunter (1901). The Imperial Encyclopaedic Dictionary: Volume 7. University of Michigan. p. 3028.
  4. ^ Richard Francis Burton (1884). The book of the sword. Chatto and Windus. p. 155. ISBN 978-0-486-25434-0.
  5. ^ "Troilus and Criseyde" (PDF). University of New York. Archived (PDF) from the original on 4 June 2024. Retrieved 1 June 2024.
  6. ^ a b Weekley, E. (1921). An etymological dictionary of modern English. John Murray. p. 528. ISBN 978-1-176-40695-7.
  7. ^ a b Krishna Lal (2007). Peacock in Indian art, thought and literature. Abhinav Publications. pp. 11, 26, 139. ISBN 978-8-17017-429-5.
  8. ^ Masica, Colin P. (1991). The Indo-Aryan languages. Cambridge language surveys. Cambridge University Press. p. 40. ISBN 978-0-52123-420-7.
  9. ^ Witzel, Michael (2002). Early Loan Words in Western Central Asia: Substrates, Migrations and Trade (PDF). Harvard University. Archived (PDF) from the original on 16 September 2012. Retrieved 11 January 2022.
  10. ^ Mookerji, Radhakumud (2016). Chandragupta Maurya and His Times. Motilal Banarsidass. p. 14. ISBN 978-8-120-80433-3. Archived from the original on 13 October 2023. Retrieved 29 January 2023.
  11. ^ "Pavo cristatus". India biodiversity portal. Archived from the original on 18 April 2024. Retrieved 1 June 2024.
  12. ^ Reproductive Biology and Phylogeny of Birds, Part B: Sexual Selection, Behavior, Conservation, Embryology and Genetics. Taylor & Francis. 2007. p. 377. ISBN 978-1-482-28051-7.
  13. ^ Brian Keith Hall; Benedikt Hallgrímsson; Monroe W. Strickberger (2014). Strickberger's Evolution. Jones & Bartlett. p. 278. ISBN 978-1-449-61484-3.
  14. ^ a b c d e f g h i William Thomas Blanford; Eugene William Oates (1889). The Fauna of British India, Including Ceylon and Burma. Birds. Vol. 4. Taylor & Francis. p. 68-70.
  15. ^ a b c d e f g h i j k l m Hugh Whistler (1949). Popular handbook of Indian birds (4th ed.). Gurney and Jackson. pp. 407–410. ISBN 978-1-135-41787-1.
  16. ^ Blau, S.K. (2004). "Light as a Feather: Structural Elements Give Peacock Plumes Their Color". Physics Today. 57 (1): 18–20. Bibcode:2004PhT....57a..18B. doi:10.1063/1.1650059.
  17. ^ a b I. K. Sharma (1974). "Ecological Studies of the Plumes of the Peacock (Pavo cristatus)" (PDF). The Condor. 76 (3): 344–346. doi:10.2307/1366352. JSTOR 1366352. Archived (PDF) from the original on 20 March 2014. Retrieved 24 March 2013.
  18. ^ Daniel Marien (1951). "Notes on some pheasants from southwestern Asia, with remarks on molt". American Museum Novitates (1518): 1–25. hdl:2246/3909.
  19. ^ P. L. Sclater (1860). "On the black-shouldered peafowl of Latham (Pavo nigripennis)". Proc. Zool. Soc. London: 221–222.
  20. ^ H. Van Grouw, H; W. Dekkers (2023). "The taxonomic history of Black-shouldered Peafowl; with Darwin's help downgraded from species to variation". Bulletin of the British Ornithologists' Club. 143 (1): 111–121. doi:10.25226/bboc.v143i1.2023.a7. hdl:10141/623047.
  21. ^ D. Seth-Smith (1940). "Peafowl". Avicultural Magazine. 5: 205–206.
  22. ^ R. G. Somes; R. E. Burger (1991). "Plumage Color Inheritance of the Indian Blue Peafowl (Pavo Cristatus): Blue, Black-Shouldered, Cameo, and Oaten". Journal of Heredity. 82: 64–68. doi:10.1093/jhered/82.1.64.
  23. ^ R. G. Somes; R. E. Burger (1993). "Inheritance of the White and Pied Plumage Color Patterns in the Indian Peafowl (Pavo cristatus)". J. Hered. 84 (1): 57–62. doi:10.1093/oxfordjournals.jhered.a111277.
  24. ^ a b C. E. Jackson (2006). Peacock. Reaktion Books. pp. 10-11. ISBN 978-1-861-89293-5.
  25. ^ Haldane, J. B. S. (1922). "Sex ratio and unisexual sterility in hybrid animals". J. Genet. 12 (2): 101–109. doi:10.1007/BF02983075. S2CID 32459333. Archived from the original on 28 November 2019. Retrieved 11 September 2019.
  26. ^ Leimu, R.; Fischer, M. (2010). Bruun, Hans Henrik (ed.). "Between-Population Outbreeding Affects Plant Defence". PLOS ONE. 5 (9): e12614. Bibcode:2010PLoSO...512614L. doi:10.1371/journal.pone.0012614. PMC 2935481. PMID 20838662.
  27. ^ P.T.L. Dodsworth (1912). "Occurrence of the Common Peafowl Pavo cristatus, Linnaeus in the neighbourhood of Simla, N.W. Himalayas". Journal of the Bombay Natural History Society. 21 (3): 1082–1083. Archived from the original on 16 February 2019. Retrieved 21 December 2017.
  28. ^ a b c d e f g h i j Salim Ali; Sidney Dillon Ripley (1980). Handbook of the birds of India and Pakistan. Vol. 2 (2nd ed.). Oxford University Press. pp. 123–126. ISBN 978-0-195-62063-4.
  29. ^ J .L. Long (1981). Introduced Birds of the World. Agricultural Protection Board of Western Australia.
  30. ^ Whitman, C.H. (1898). "The birds of Old English literature". The Journal of Germanic Philology. 2 (2): 40. doi:10.5962/bhl.title.54912.
  31. ^ a b P. T. Nair (1974). "The Peacock Cult in Asia" (PDF). Asian Folklore Studies. 33 (2): 93–170. doi:10.2307/1177550. JSTOR 1177550. Archived from the original (PDF) on 5 February 2009.
  32. ^ Jaiswal, S.K. (2018). "Genome Sequence of Indian Peacock Reveals the Peculiar Case of a Glittering Bird". bioRxiv. doi:10.1101/315457.
  33. ^ Pranav Trivedi; AJT Johnsingh (1996). "Roost selection by Indian Peafowl (Pavo cristatus) in Gir Forest, India". J. Bombay Nat. Hist. Soc. 93 (1): 25–29. Archived from the original on 2 August 2020. Retrieved 21 December 2017.
  34. ^ B. M. Parasharya; Aeshita Mukherjee (1999). "Roosting behaviour of Indian Peafowl Pavo cristatus". J. Bombay Nat. Hist. Soc. 96 (3): 471–472. Archived from the original on 2 August 2020. Retrieved 21 December 2017.
  35. ^ K. Navaneethakannan (1984). "Activity patterns in a colony of Peafowls (Pavo cristatus) in nature". J. Bombay Nat. Hist. Soc. 81 (2): 387–393. Archived from the original on 2 August 2020. Retrieved 21 December 2017.
  36. ^ "Pavo cristatus (Indian peafowl)". Animal Diversity Web. Archived from the original on 25 September 2022. Retrieved 23 September 2022.
  37. ^ AJT Johnsingh (1976). "Peacocks and cobra". J. Bombay Nat. Hist. Soc. 73 (1): 214. Archived from the original on 2 August 2020. Retrieved 21 December 2017.
  38. ^ a b c d e AJT Johnsingh; S Murali (1978). "The ecology and behaviour of the Indian Peafowl". Bombay Natural History Society. 75 (4): 1069–1079. Archived from the original on 2 August 2020. Retrieved 21 December 2017.
  39. ^ Trivedi, Pranav; Johnsingh, AJT (1995). "Diet of Indian Peafowl Pavo cristatus Linn. in Gir Forest, Gujarat". J. Bombay Nat. Hist. Soc. 92 (2): 262–263. Archived from the original on 2 August 2020. Retrieved 21 December 2017.
  40. ^ M. Takahashi; T. Hasegawa (2008). "Seasonal and diurnal use of eight different call types by Indian peafowl ( Pavo cristatus)". Journal of Ethology. 26 (3): 375–381. doi:10.1007/s10164-007-0078-4. S2CID 27794735.
  41. ^ "Common (Indian) Peafowl". Rolling Hills Wildlife Adventure. Archived from the original on 24 September 2015. Retrieved 26 December 2012.
  42. ^ M. Petrie; A. Krupa & T. Burke (1999). "Peacocks lek with relatives even in the absence of social and environmental cues" (PDF). Nature. 401 (6749): 155–157. Bibcode:1999Natur.401..155P. doi:10.1038/43651. S2CID 4394886. Archived (PDF) from the original on 22 July 2011. Retrieved 2 June 2010.
  43. ^ M. R. M. Rands; M .W. Ridley; A. D. Lelliott (1984). "The social organization of feral peafowl". Animal Behaviour. 32 (3): 830–835. doi:10.1016/S0003-3472(84)80159-1. S2CID 53198443.
  44. ^ A. W. Stokes; H. W. Williams (1971). "Courtship Feeding in Gallinaceous Birds" (PDF). The Auk. 88 (3): 543–559. Archived (PDF) from the original on 4 January 2014. Retrieved 24 March 2013.
  45. ^ R. Vyas (1994). "Unusual breeding site of Indian Peafowl". Newsletter for Birdwatchers. 34 (6): 139.
  46. ^ Y. S. Shivrajkumar (1957). "An incubating Peacock (Pavo cristatus Linn.)". Journal of the Bombay Natural History Society. 54 (2): 464. Archived from the original on 2 August 2020. Retrieved 21 December 2017.
  47. ^ "Indian peafowl". Animalia. Archived from the original on 28 September 2022. Retrieved 1 June 2024.
  48. ^ H. Singh (1964). "Peahens flying up with young". Newsletter for Birdwatchers. 4 (1): 14.
  49. ^ Miller, Geoffrey (2000). The mating mind : how sexual choice shaped the evolution of human nature (1st ed.). New York City: Anchor Books. ISBN 978-0-385-49517-2.
  50. ^ Mary Fuertes Boynton (1952). "Abbott Thayer and Natural History". Osiris. 10 (1): 542–555. doi:10.1086/368563. S2CID 145455502.
  51. ^ Philip Ball (31 July 2014). Invisible: The Dangerous Allure of the Unseen. Random House. p. 239. ISBN 978-1-84792-289-2.
  52. ^ Theodore Roosevelt (1911). "Revealing and concealing coloration in birds and mammals". Bulletin of the American Museum of Natural History. 30 (Article 8): 119–231. hdl:2246/470.
  53. ^ Amotz Zahavi; Avishag Zahavi; Amir Balaban; Melvin Patrick Ely (1999). The handicap principle: a missing piece of Darwin's puzzle. Oxford University Press. ISBN 0-19-512914-8.
  54. ^ Albert Ros; Maria Correia; John Wingfield; Rui Oliveira (2009). "Mounting an immune response correlates with decreased androgen levels in male peafowl, Pavo cristatus". Journal of Ethology. 27 (2): 209–214. doi:10.1007/s10164-008-0105-0. hdl:10400.12/1242. S2CID 25651539.
  55. ^ T. T. Kimball; E. L. Braun; J. D. Ligon; V. Lucchini; E. Randi (2001). "A molecular phylogeny of the peacock-pheasants (Galliformes: Polyplectron spp.) indicates loss and reduction of ornamental traits and display behaviours". Biological Journal of the Linnean Society. 73 (2): 187–198. Bibcode:2001BJLS...73..187K. doi:10.1006/bijl.2001.0536.
  56. ^ N. B. Davies; J. R. Krebs; S. A. West (2012). Introduction to Behavioural Ecology (Fourth ed.). John Wiley & Sons. pp. 179–222.
  57. ^ a b c Adeline Loyau; Marie Petrie; M. S. Jalme; G. Sorci (2008). "Do peahens not prefer peacocks with more elaborate trains?". Animal Behaviour. 76 (5): e5–e9. doi:10.1016/j.anbehav.2008.07.021. S2CID 40638610.
  58. ^ R. Dakin; R. Montgomerie (2011). "Peahens prefer peacocks displaying more eyespots, but rarely". Animal Behaviour. 82 (1): 21–28. doi:10.1016/j.anbehav.2011.03.016. S2CID 53201463.
  59. ^ Mariko Takahashi; Hiroyuki Arita; Mariko Hiraiwa-Hasegawa; Toshikazu Hasegawa (April 2008). "Peahens do not prefer peacocks with more elaborate trains". Animal Behaviour. 75 (4): 1209–1219. doi:10.1016/j.anbehav.2007.10.004.
  60. ^ S. Harikrishnan; K. Vasudevan; K. Sivakumar (2010). "Behavior of Indian Peafowl Pavo cristatus Linn. 1758 During the Mating Period in a Natural Population". The Open Ornithology Journal. 3: 13–19. doi:10.2174/1874453201003010013.
  61. ^ M. L. Hale; M. H. Verduijn; A. P. Moller; K. Wolff; M. Petrie (2009). "Is the peacock's train an honest signal of genetic quality at the major histocompatibility complex?". Journal of Evolutionary Biology. 22 (6): 1284–1294. doi:10.1111/j.1420-9101.2009.01746.x. PMID 19453370.
  62. ^ Yorzinski, Jessica L.; Patricelli, Gail L.; Babcock, Jason S.; Pearson, John M.; Platt, Michael L. (2013). "Through their eyes: selective attention in peahens during courtship". Journal of Experimental Biology. 216 (16): 3035–3046. doi:10.1242/jeb.087338. PMC 4074220. PMID 23885088.
  63. ^ M. S. S. Flower (1938). "The duration of life in animals – IV. Birds: special notes by orders and families". Proceedings of the Zoological Society of London: 195–235.
  64. ^ "Food habits of golden jackal (Canis aureus) and striped hyena (Hyaena hyaena) in Sariska Tiger Reserve, Western India". World Journal of Zoology. 7 (2): 106–112. 2012.
  65. ^ M. W. Hayward; W. Jędrzejewski; B. Jedrzejewska (2012). "Prey preferences of the tiger P anthera tigris". Journal of Zoology. 286 (3): 221–231. doi:10.1111/j.1469-7998.2011.00871.x.
  66. ^ C. Arviazhagan; R. Arumugam; K. Thiyagesan (2007). "Food habits of leopard (panthera pardus fusca), dhole (cuon alpinus) and striped hyena (hyaena hyaena) in a tropical dry thorn forest of southern India". Journal of the Bombay Natural History Society. 104: 178–187.
  67. ^ Dhanwatey, Amrut S (1986). "A Crested Hawk-Eagle Spizaetus cirrhatus (Gmelin) killing a Peafowl Pavo cristatus Linnaeus". J. Bombay Nat. Hist. Soc. 83 (4): 202. Archived from the original on 2 August 2020. Retrieved 21 December 2017.
  68. ^ Raza Tehsin; Fatema Tehsin (1990). "Indian Great Horned Owl Bubo bubo (Linn.) and Peafowl Pavo cristatus Linn". J. Bombay Nat. Hist. Soc. 87 (2): 300. Archived from the original on 14 October 2018. Retrieved 21 December 2017.
  69. ^ Shahla Yasmin; H. S. A. Yahya (2000). "Group size and vigilance in Indian Peafowl Pavo cristatus (Linn.), Family: Phasianidae". J. Bombay Nat. Hist. Soc. 97 (3): 425–428. Archived from the original on 2 August 2020. Retrieved 21 December 2017.
  70. ^ S. Madge; P. McGowan (2002). Pheasant, partridges and grouse, including buttonquails, sandgrouse and allies. Christopher Helm, London.
  71. ^ "Pavo cristatus". Bird life. Archived from the original on 17 April 2024. Retrieved 1 June 2024.
  72. ^ J. P. Alexander (1983). "Probable diazinon poisoning in peafowl: a clinical description". Vet. Rec. 113 (20): 470. doi:10.1136/vr.113.20.470 (inactive 19 November 2024). PMID 6649386. S2CID 11252054.{{cite journal}}: CS1 maint: DOI inactive as of November 2024 (link)
  73. ^ K. Ramesh; P. McGowan (2009). "On the current status of Indian Peafowl Pavo cristatus (Aves: Galliformes: Phasianidae): keeping the common species common". Journal of Threatened Taxa. 1 (2): 106–108. doi:10.11609/jott.o1845.106-8.
  74. ^ "Researchers quantify damage caused by peafowl to farmers". Down to Earth. 10 December 2018. Retrieved 1 June 2024.
  75. ^ a b Tharun Amarasinge (27 January 2020). "Sri Lanka's divine pests: Peafowl problem calls for human action". Mongabay. Archived from the original on 31 May 2024. Retrieved 1 June 2024.
  76. ^ "Peafowl". City of San Antonio. Archived from the original on 27 June 2024. Retrieved 1 June 2024.
  77. ^ V. Sahajpal; S. P. Goyal (2008). "Identification of shed or plucked origin of Indian Peafowl (Pavo cristatus) tail feathers: Preliminary findings". Science and Justice. 48 (2): 76–78. doi:10.1016/j.scijus.2007.08.002. PMID 18700500.
  78. ^ C . K. Borad; B. M. Parasharya (January 2018). "Conservation of Indian peafowl in agricultural landscape". International Journal on Faunal and Biological Studies. 5 (2): 108–113. ISSN 2347-2677.
  79. ^ "La Canada, California, City Council, Peafowl Management Plan Update" (PDF). Archived from the original (PDF) on 7 June 2011.
  80. ^ "East Northamptonshire plan" (PDF). Archived from the original (PDF) on 13 June 2011.
  81. ^ "Living with peafowl. City of Dunedin, Florida" (PDF). Archived from the original (PDF) on 21 December 2008.
  82. ^ National Parks and Wildlife Sanctuaries in India (PDF). Ministry of Environment, Forest and Climate Change, Government of India (Report). November 2021. Retrieved 1 June 2024.
  83. ^ "Indian peafowl". San Francisco Zoo. Retrieved 1 June 2024.
  84. ^ "Indian peafowl". San Diego Zoo. Archived from the original on 5 March 2021. Retrieved 1 June 2024.
  85. ^ "Indian peafowl". Barcelona Zoo. Archived from the original on 22 April 2024. Retrieved 1 June 2024.
  86. ^ "National Bird". Government of India. Archived from the original on 29 October 2021. Retrieved 3 April 2024.
  87. ^ Fitzpatrick J (1923). "Folklore of birds and beasts of India". J. Bombay Nat. Hist. Soc. 28 (2): 562–565. Archived from the original on 2 August 2020. Retrieved 21 December 2017.
  88. ^ "The Vehicle Lord Murugan rides is a peacock called Paravani". Gandhi Luthuli Documentation Center. Archived from the original on 24 September 2023. Retrieved 1 December 2023.
  89. ^ Ramavijaya (The mythological history of Rama). Dubhashi and company. 1891. p. 14.
  90. ^ Choskyi, Ven. Jampa (1988). "Symbolism of Animals in Buddhism". Buddhist Hiamalaya. 1 (1). Archived from the original on 29 May 2010. Retrieved 1 June 2010.
  91. ^ "Letter from the Desk of David Challinor, November 2001" (PDF). Smithsonian Institution. Archived from the original (PDF) on 27 August 2011. Retrieved 2 June 2010.
  92. ^ Rolland, Eugene (1915). Faune populaire de la France. Tome 6. p. 149. Archived from the original on 11 August 2017. Retrieved 2 June 2017.
  93. ^ Emeneau, M.B (1943). "Studies in the Folk-Tales of India: I: Some Origin Stories of the Todas and Kotas". Journal of the American Oriental Society. 63 (2): 158–168. doi:10.2307/594123. JSTOR 594123.
  94. ^ R. H. W. Empson (1928). The cult of the peacock angel. H. F and G. Witherby.
  95. ^ B. H. Springett (1922). Secret sects of Syria and the Lebanon. George Allen & Unwin.
  96. ^ "A Peacock's Dream: Introducing In geveb". In geveb. Archived from the original on 4 June 2019. Retrieved 4 June 2019.
  97. ^ "The Golden Peacock | Jewish Folk Songs". Jewish Folk Songs. Archived from the original on 29 March 2017. Retrieved 4 June 2019.
  98. ^ T. Tyrberg (2002). "The archaeological record of domesticated and tamed birds in Sweden" (PDF). Acta Zoologica Cracoviensia. 45: 215–231. Archived from the original (PDF) on 26 July 2011. Retrieved 2 June 2010.
  99. ^ Peter Gwyn (2000). The King's Cardinal: The rise and Fall of Thomas Wolsey. Pimlico. p. 113. ISBN 978-0-71265-122-6.
  100. ^ Arthur Fox-Davies (1909). A Complete Guide to Heraldry. T.C. and E.C. Jack. pp. 246–247.
  101. ^ Nikki Finke (11 December 2012). "Company Quietly Adds NBC Peacock To Corporate Logo". Deadline Hollywood. Archived from the original on 2 April 2015. Retrieved 6 February 2013.
  102. ^ "Best International Airline Logos with Mythological Creatures". Zillion designs. 20 February 2014. Retrieved 1 June 2024.
  103. ^ "Peacock". Cambridge English Dictionary. Archived from the original on 8 September 2010. Retrieved 2 June 2010.
  104. ^ E. Partridge; Paul Beale (2002). A dictionary of slang and unconventional English. Routledge. ISBN 978-0-415-29189-7.

Further reading

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  • Galusha, JG; Hill, LM (1996) A study of the behaviour of Indian Peacocks Pavo cristatus on Protection Island, Jefferson County, Washington, USA. Pavo 34(1&2):23–31.
  • Prakash, M (1968) Mating of Peacocks Pavo cristatus. Newsletter for Birdwatchers . 8(6), 4–5.
  • Sharma, IK (1973). "Ecological studies of biomass of the Peafowl (Pavo cristatus)". Tori. 22 (93–94): 25–29. doi:10.3838/jjo1915.22.25.
  • Sharma, IK (1981). "Adaptations and commensality of the Peafowl (Pavo cristatus) in the Indian Thar Desert". Annals Arid Zone. 20 (2): 71–75.
  • Shrivastava AB, Nair NR, Awadhiya RP, Katiyar AK (1992). "Traumatic ventriculitis in Peacock (Pavo cristatus)". Indian Vet. J. 69 (8): 755.
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