Fine Art

Gallus gallus

Gallus gallus (Information about this image)

Life-forms

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Cladus: Avemetatarsalia
Cladus: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauriformes
Cladus: Dracohors
Cladus: Dinosauria
Cladus: Saurischia
Cladus: Eusaurischia
Subordo: Theropoda
Cladus: Neotheropoda
Cladus: Averostra
Cladus: Tetanurae
Cladus: Avetheropoda
Cladus: Coelurosauria
Cladus: Tyrannoraptora
Cladus: Maniraptoromorpha
Cladus: Maniraptoriformes
Cladus: Maniraptora
Cladus: Pennaraptora
Cladus: Paraves
Cladus: Eumaniraptora
Cladus: Avialae
Infraclassis: Aves
Cladus: Avebrevicauda
Cladus: Pygostylia
Cladus: Ornithothoraces
Cladus: Ornithuromorpha
Cladus: Carinatae
Parvclassis: Neornithes
Cohors: Neognathae
Cladus: Pangalloanserae
Cladus: Galloanseres
Ordo: Galliformes

Familia: Phasianidae
Subfamilia: Phasianinae
Genus: Gallus
Species: Gallus gallus
Subspecies: G. g. bankiva – G. g. domesticus – G. g. gallus – G. g. jabouillei – G. g. murghi – G. g. spadiceus
Name

Gallus gallus (Linnaeus, 1758)
Synonymy

Phasianus gallus (protonym)
Tetrao ferrugineus Gmelin, 1788
Gallus ferrugineus (Gmelin, 1788)

References

Linnaeus, C. 1758. Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Editio Decima, Reformata. Tomus I. Holmiæ (Stockholm): impensis direct. Laurentii Salvii. 824 pp. DOI: 10.5962/bhl.title.542 BHL p. 158 BHL Reference page.

Vernacular names
Afrikaans: Rooiboshoender
ak: Akokɔ
العربية: دجاج الأدغال الأحمر
অসমীয়া: বনকুকুৰা
беларуская (тарашкевіца): Банкіўскі певень
беларуская: Банкіўскі певень
български: Банкивска кокошка
भोजपुरी: जंगली मुर्गा
বাংলা: লাল বনমোরগ
català: Gall de Bankiva
čeština: Kur bankivský
dansk: Bankivahøne
Deutsch: Bankivahuhn
eʋegbe: Koklo
English: Red Junglefowl
Esperanto: Bankiva koko
español: Gallo bankiva
eesti: Puna-džunglikana
فارسی: مرغ جنگلی سرخ
suomi: Punaviidakkokana
arpetan: Jal dorâ
français: Coq bankiva
עברית: תרנגול בנקיבה
hrvatski: Divlja kokoš
magyar: Bankivatyúk
Bahasa Indonesia: Ayam-hutan Merah
íslenska: Bankívahænsn
italiano: Gallo rosso
日本語: セキショクヤケイ
Jawa: Pitik alas abang
ქართული: ბანკივური ქათამი
қазақша: Банкивтік қораз
ಕನ್ನಡ: ಕೆಂಪು ಕಾಡುಕೋಳಿ
한국어: 적색야계
кыргызча: Жапайы тоок
Lëtzebuergesch: Bankivahong
lietuvių: Bankivinė višta
latviešu: Sarkanā savvaļas vista
മലയാളം: ചുവന്ന കാട്ടുകോഴി
Bahasa Melayu: Ayam hutan Merah
မြန်မာဘာသာ: တောကြက်
Nāhuatl: Caxtiltōtōtl
नेपाली: लुइँचे
Nederlands: Bankivahoen
norsk nynorsk: Jungelhane
norsk: Rød bankivahøne
Diné bizaad: Naʼahóóhai
ଓଡ଼ିଆ: ଲାଲ୍ ଜଙ୍ଗଲୀ କୁକୁଡ଼ା
polski: Kur bankiwa
پنجابی: رتا جنگلی ککڑ
português: Galo-banquiva
русский: Банкивская джунглевая курица
srpskohrvatski / српскохрватски: Divlja kokoš
svenska: Röd djungelhöna
தமிழ்: சிவப்புக் காட்டுக்கோழி
ไทย: ไก่ป่า
Tagalog: Manok
lea faka-Tonga: Moa kaivao
українська: Банківський півень
Tiếng Việt: Gà rừng lông đỏ
中文(简体): 红原鸡
中文(繁體): 紅原雞

The red junglefowl (Gallus gallus), also known as the Indian red junglefowl (and formerly the bankiva or bankiva-fowl), is a species of tropical, predominantly terrestrial bird in the fowl and pheasant family, Phasianidae, found across much of Southeast and parts of South Asia. The red junglefowl was the primary species to give-rise to today's many breeds of domesticated chicken (G. g. domesticus); additionally, the related grey junglefowl (G. sonneratii), Sri Lankan junglefowl (G. lafayettii) and the Javanese green junglefowl (G. varius) have also contributed genetic material to the gene pool of the modern chicken.[2][3]

Molecular evidence, derived from whole-genome sequencing, has revealed that the chicken was first domesticated from red junglefowl ca. 8,000 years ago,[2] with this domestication-event involving multiple maternal origins.[2][4] Since then, the domestic form has spread around the world, and they are bred by humans in their millions for meat, eggs, colourful plumage and companionship.[5] Outside of their native range, mainly in the Americas and Europe, the wild form of Gallus gallus is sometimes used in zoos, parks or botanical gardens as a free-ranging form of beneficial "pest control", similarly to—and often kept with—the Indian blue peafowl (Pavo cristatus) or the helmeted guineafowl (Numida meleagris); hybridisation has been documented between Gallus and Numida.[6]
Taxonomy and systematics
Main article: Junglefowl

The red jungle fowl has 5 recognized subspecies:[7]

G. g. bankiva (Temminck, 1813) - Java and Bali
G. g. gallus (Linnaeus, 1758) - southern Myanmar through Indochina
G. g. jabouillei (Delacour & Kinnear, 1928) - south China to northern Vietnam and northern Laos
G. g. murghi (Robinson & Kloss, 1920) - north India, Nepal, Bhutan, and Bangladesh
G. g. spadiceus (Bonnaterre, 1792) - northeastern India to south China, the Malay peninsula, and north Sumatra

Gallus 

Green junglefowl–Gallus varius (Shaw, 1798)

Red junglefowlGallus gallus (Linnaeus, 1758)

Sri Lankan junglefowl–Gallus lafayettii (Lesson, 1831)

Grey junglefowl–Gallus sonneratii (Temminck, 1813)

Cladogram showing the species in the genus Gallus.[2][8]
Description

The nominate race of red junglefowl has a mix of feather colours, with orange, brown, red, gold, grey, white, olive, and even metallic green plumage. The tail of the male rooster can grow up to 28 centimetres (11 in), and the whole bird may be as long as 70 centimetres (28 in). There are 14 tail feathers. A moult in June changes the bird's plumage to an eclipse pattern, which lasts through October. The male eclipse pattern includes a black feather in the middle of the back and small red-orange plumes spread across the body. Female eclipse plumage is generally indistinguishable from the plumage at other seasons, but the moulting schedule is the same as that of males.[9]

Compared to the more familiar domestic chicken, the red junglefowl has a much smaller body mass (around 2+1⁄4 lbs (1 kg) in females and 3+1⁄4 lbs (1.5 kg) in males) and is brighter in coloration.[9] Junglefowl are also behaviourally different from domestic chickens, being naturally very shy of humans compared to the much tamer domesticated subspecies.
Sexual dimorphism

Male junglefowl are significantly larger than females and have brightly coloured decorative feathers. The male's tail is composed of long, arching feathers that initially look black, but shimmer with blue, purple, and green in direct light. He also has long, golden hackle feathers on his neck and his back. The female's plumage is typical of this family of birds in being cryptic and adapted for camouflage. She alone looks after the eggs and chicks. She also has a very small comb and wattles (fleshy ornaments on the head that signal good health to rivals and potential mates) compared to the males.
Drab female walking on stones
Female red junglefowl

During their mating season, the male birds announce their presence with the well-known "cock-a-doodle-doo" call or crowing.[10] Within flocks, only dominant males crow.[11] Male red junglefowl have a shorter crowing sound than domestic roosters; the call cuts off abruptly at the end.[10] This serves both to attract potential mates and to make other male birds in the area aware of the risk of fighting a breeding competitor. A spur on the lower leg just behind and above the foot serves in such fighting. Their call structure is complex and they have distinctive alarm calls for aerial and ground predators to which others react appropriately.[12][13]
Genetics
Orthology

G. gallus has three transferrins, all of which cluster closely with other vertebrates' orthologs.[14]
Distribution and habitat

The range of the wild form stretches from India, Nepal and Bangladesh in the west, and eastwards across southern China, to Indochina; south/southeast into Malaysia, Singapore, the Philippines, and Indonesia. Junglefowl/Chickens were one of three main animals (along with domesticated pigs and dogs) carried by early Austronesian peoples from Island Southeast Asia in their voyages to the islands of Oceania in prehistory, starting around 5,000 years BP [citation needed]. Today, their modern descendants are found throughout Micronesia, Melanesia, and Polynesia.[15]

Red junglefowl prefer disturbed habitats and edges, both natural and human-created. The forage[11][16][17] and thick cover in these sorts of areas are attractive to junglefowl, especially nesting females.[18] Junglefowl use both deforested and regenerating forests,[19] and often are found near human settlements[20] or areas of regrowth from slash-and-burn cultivation.[11] Areas burned to promote bamboo growth also attract junglefowl, with edible bamboo seeds more available.[17][18] In some areas, red junglefowl are absent from silvicultural[19] and rubber[21] plantations; elsewhere, they will occur in both tea plants and palm oil plantations.[21] In the state of Selangor, Malaysia, palm foliage provides suitable cover; palm nut fruit provides adequate food, as well as insects (and their larvae) within, and adjacent to, the trees.[22] The palms also offer an array of roost sites, from the low perches (~4 m) favored by females with chicks to the higher perches (up to 12 m) used by other adults.[23]

Red junglefowl drink surface water when it is available, but they do not require it. Birds in North-Central India visit water holes frequently during the dry season, although not all junglefowl on the subcontinent live close enough to water to do so;[18] population densities may thus be lower, where surface water is limited.[17]
Behaviour and ecology
A colorful male junglefowl on a forest floor
Male red junglefowl

Red junglefowl regularly bathe in dust to keep the right balance of oil in their plumage. The dust absorbs extra oil and subsequently falls off.[24]

Flight in these birds is almost purely confined to reaching their roosting areas at sunset in trees or any other high and relatively safe places free from ground predators, and for escape from immediate danger through the day.[25]

Dominant male junglefowl appear to defend a territory against other dominant males, and the size of the territories has been inferred based on the proximity of roosts. Beebe[20] concluded that territories were rather small, especially as compared to some of the pheasants with which he was familiar. This was supported by Collias and Collias,[18] who reported that adjacent roost sites can be as close as 100 metres (330 ft). Within flocks, male red junglefowl exhibit dominance hierarchies, and dominant males tend to have larger combs than subordinate males.[26] Red junglefowl typically live in flocks of one to a few males and several females. Males are more likely to occur alone than females.[11][17][18][27][28][29]
A colourful male junglefowl (left) and a less colourful female junglefowl (right)
Illustration of male and female red junglefowl
Breeding
A small, near-round brown junglefowl egg (left) and a larger, paler chicken egg (right)
Gallus gallus - MHNT

Males make a food-related display called "tidbitting", performed upon finding food in the presence of a female.[30] The display is composed of coaxing, cluck-like calls, and eye-catching bobbing and twitching motions of the head and neck. During the performance, the male repeatedly picks up and drops the food item with his beak. The display usually ends when the hen takes the food item either from the ground or directly from the male's beak. Eventually, they sometimes mate.[31]

In many areas, red junglefowl breed during the dry portion of the year, typically winter or spring. This is true in parts of India, Nepal, Thailand, Vietnam, and Laos.[11][17][18][27][28][29] However, year-round breeding by red junglefowl has been documented in palm oil plantations in Malaysia[22] and also may occur elsewhere.[28] During the laying period, red junglefowl females lay an egg every day. Eggs take 21 days to develop. Chicks fledge in about 4 to 5 weeks, and at 12 weeks old they are chased out of the group by their mother — at which point they start a new group or join an existing one. Sexual maturity is reached at 5 months, with females taking slightly longer than males to reach maturity.[9]

Dominant males attempt to maintain exclusive reproductive access to females, though females choose to mate with subordinate males about 40% of the time in a free-ranging feral flock in San Diego, California.[32][33]
Diet

Red junglefowl are attracted to areas with ripe fruit or seeds,[18] including fruit plantations,[21] fields of domestic grain,[20] and stands of bamboo.[11] Although junglefowl typically eat fallen fruits and seeds on the ground, they occasionally forage in trees by perching on branches and feeding on hanging fruit.[11] Fruits and seeds of scores of plant species have been identified from junglefowl crops, along with grasses, leaves, roots, and tubers.[11][34] In addition, red junglefowl capture a wide variety of arthropods, other invertebrates, and vertebrates such as small lizards. Even mammalian faeces may be consumed.[11] Many of these items are taken opportunistically as the birds forage, although some arthropods, such as termites, are taken in large quantities; about 1,000 individual termites have been found in a single crop.[11][18] Plant materials constitute a higher proportion of the diet of adult red junglefowl than do arthropods and other animals. In contrast, chicks eat mostly adult and larval insects, earthworms, and only occasional plant material.[11]
Relationship to humans
See also: Chicken

Chickens were created when red junglefowl were domesticated for human use around 8,000 years ago[2] as subspecies Gallus gallus domesticus. They are now a major source of food for humans. However, undomesticated red junglefowl still represent an important source of meat and eggs in their endemic range. The undomesticated form is sometimes used in cock-fighting.[9]
Timeline of domestication

In 2012, a study examined mitochondrial DNA recovered from ancient bones from Europe, Thailand, the Pacific, and Chile, and from Spanish colonial sites in Florida and the Dominican Republic, in directly dated samples originating in Europe at 1,000 BP and in the Pacific at 3,000 BP. The chicken was primarily domesticated from red junglefowl, with subsequent genetic contributions from grey junglefowl, Sri Lankan junglefowl, and green junglefowl.[2] Domestication occurred about 8,000 years ago, as based on molecular evidence[2] from a common ancestor flock in the bird's natural range, and then proceeded in waves both east and west.[35][36] Zoogeography and evolutionary biology point to the original domestication site of chickens as somewhere in Mainland Southeast Asia and southern China in the Neolithic. Chickens were one of the ancestral domesticated animals of the Austronesian peoples. They were transported to Taiwan and the Philippines around 5,500 to 4,500 years ago. From there, they spread outwards with the Austronesian migrations to the rest of Island Southeast Asia, Micronesia, Island Melanesia, and Polynesia in prehistoric times.[37]

Other archaeological evidence suggests domestication dates around 7,400 BP from the Chishan site, in the Hebei province of China. However, the domestication event in China has now been disputed by several studies citing unfavourable weather conditions at the time.[35][36] In the Ganges region of India, wild red junglefowl were being used by humans as early as 7,000 years ago. No domestic chicken remains older than 4,000 years have been identified in the Indus Valley, and the antiquity of chickens recovered from excavations at Mohenjodaro is still debated.[5]
Genomic information

NCBI genome ID 111
Ploidy diploid
Number of chromosomes 78
Year of completion 2012

Hybridization

The other three members of the genus — Sri Lanka junglefowl (G. lafayetii), grey junglefowl (G. sonneratii), and green junglefowl (G. varius) — do not usually produce fertile hybrids with the red junglefowl. However, supporting the hypothesis of a hybrid origin, research published in 2008 found that the gene responsible for the yellow skin of the domestic chicken most likely originated in the closely related grey junglefowl and not from the red junglefowl.[3] Similarly, a 2020 study that analysed the whole genomes of Sri Lanka junglefowl, grey junglefowl, and green junglefowl found strong introgressive hybridisation events in different populations of indigenous village chickens.[2] The study also shows that 71–79% of red junglefowl DNA is shared with the domestic chicken.[2] A culturally significant hybrid between the red junglefowl and the green junglefowl in Indonesia is known as the bekisar.
Conservation status
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Wild-type red junglefowl are thought to be facing threats due to hybridisation at forest edges, where domesticated free-ranging chickens are common.[38][39][40][41][42][43][44][45][46][47][48] Nevertheless, they are classified by the IUCN as a species of least concern.
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"Red Junglefowl – Species factsheet: Gallus gallus", BirdLife Species Factsheet, BirdLife International, 2007, retrieved 20 September 2007
Peterson, A.T. & Brisbin, I. L. Jr. (1999), "Genetic endangerment of wild red junglefowl (Gallus gallus)", Bird Conservation International, 9 (4): 387–394, doi:10.1017/s0959270900002148, hdl:1808/6522
Brisbin, I. L. Jr. (1969), "Behavioral differentiation of wildness in two strains of Red Junglefowl (abstract)", Am. Zool., 9: 1072

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