Jake Harper
The chicken, or Gallus gallus domesticus, is a domesticated subspecies of the red junglefowl (Gallus gallus), which is native to Southeast Asia. The red junglefowl is believed to be the primary ancestor of the domestic chicken, though some scientists argue that hybridisation with the Grey Junglefowl (Gallus sonnaratii) of India has also occurred. Chickens were first domesticated around 8,000 years ago and have since become one of the most common and widespread domesticated animals globally.
| Characteristics | Values |
|---|---|
| Subspecies | Gallus gallus domesticus |
| Ancestor | Red Junglefowl |
| Native region | Southeast Asia |
| Domestication | 8,000 years ago |
| Dispersion | Migration, trade, cockfighting |
| Global population | 26.5 billion |
| Annual production | 50 billion |
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What You'll Learn
Chickens are native to Southeast Asia
The chicken (Gallus gallus domesticus) is a domesticated subspecies of the red junglefowl (Gallus gallus), which is native to Southeast Asia and Oceana. The red junglefowl is considered the primary wild ancestor of chickens, and it is believed that domestication occurred in this region between 7,000 and 10,000 years ago. This is supported by genetic evidence, which suggests that modern chickens descend primarily from domesticated and wild varieties in what is now Myanmar, Laos, Thailand, and southern China.
The distribution of chickens occurred rapidly and became widespread due to their ability to provide meat and eggs without competing for human food sources. Additionally, the sport of cockfighting is believed to have contributed significantly to their dispersion. Chickens are social animals with complex vocalizations and behaviours, and they hold significant roles in folklore, religion, and literature across various societies.
Chickens are omnivores and can live for 5 to 10 years, depending on the breed. They are gregarious, living in flocks, and they incubate eggs and raise their young communally. Chickens have a concept of dominance, known as the "pecking order," where individual chickens establish their rank within the flock. While they are primarily kept for meat and eggs, they are also kept as pets and have become integral to global agriculture and animal husbandry.
In summary, chickens originated in Southeast Asia through the domestication of the red junglefowl. Their distribution and domestication occurred rapidly, and they have since become a ubiquitous presence in almost all parts of the world, playing a significant role in human culture and cuisine.
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They were first domesticated 7,000-10,000 years ago
Chickens are believed to have been first domesticated 7,000-10,000 years ago in Southeast Asia and Oceana. They descended primarily from domesticated and wild varieties in what is now Myanmar, Laos, Thailand, and southern China. The people of northern Southeast Asia or southern China domesticated a colourful pheasant sometime after about 7,500 B.C.E. Migrants and traders then carried the bird across Asia and on to every continent except Antarctica.
The chicken (Gallus gallus domesticus) is a domesticated subspecies of the red junglefowl (Gallus gallus), which is native to Southeast Asia. Archaeological evidence supports domestic chickens in Southeast Asia well before 6000 BC, in China by 6000 BC, and in India by 2000 BC.
A 2020 Nature study that sequenced the DNA of 863 chickens worldwide suggests that all domestic chickens originate from a single domestication event of red junglefowl, whose present-day distribution is predominantly in southwestern China, northern Thailand, and Myanmar. These domesticated chickens spread across Southeast and South Asia, where they interbred with local wild species of junglefowl, forming genetically and geographically distinct groups.
Charles Darwin argued that chickens descended from the red junglefowl because the birds resemble each other and can produce fertile offspring. He speculated that domestication occurred in India. However, five varieties of the pheasant inhabit a broad arc extending from the jungles of Indonesia to the Himalayan foothills of Pakistan, so it is unclear which variety led to the chicken and where.
Based on presumed chicken bones, archaeologists have claimed that domestication occurred 9,000 years ago in northern China and 4,000 years ago in Pakistan. However, DNA studies contradict these claims, suggesting that chickens were not domesticated in northern China or the Indus Valley.
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They spread through migration and trade
Chickens are native to Southeast Asia, where they were first domesticated around 8,000 years ago. They are a domesticated subspecies of the red junglefowl, which is native to southwestern China, northern Thailand, Myanmar, and Laos.
Chickens spread to other parts of the world through migration and trade. They were carried by migrants and traders across Asia and to every continent except Antarctica. Chickens were easy to keep, travel with, and farm, and provided meat and eggs without competing with human food sources. This made them a valuable food source, and they were quickly incorporated into local cuisines.
The sport of cockfighting is believed to have been a significant reason for the dispersion of chickens. They may have also been dispersed through world fairs and global events.
Chickens reached Europe during the Iron Age and sub-Saharan Africa after the Iron Age. They may not have reached the Americas until after Western contact, although there is a Polynesian hypothesis as well.
Chickens have adapted to diverse environments, including arid and semi-arid areas, and are now found in the Middle East, North Africa, and the Horn of Africa. They are a major source of protein for agricultural communities worldwide and are an essential part of global animal husbandry and agriculture.
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The sport of cockfighting helped their dispersion
The chicken (*Gallus gallus domesticus*) is a domesticated subspecies of the red junglefowl (*Gallus gallus*), originally native to Southeast Asia. They were first domesticated around 8,000 years ago and have since become one of the most common and widespread domesticated animals worldwide.
The sport of cockfighting, which involves pitting male chickens or gamecocks against each other in a fight, has been practised for thousands of years and is believed to have significantly contributed to the dispersion of chickens. Breeding and fighting gamecocks was extremely popular throughout Europe, especially in England and Spain, and later in their colonies. The sport was introduced to North America at an early date, and historical figures such as George Washington and Thomas Jefferson are known to have participated in it. While cockfighting has been outlawed in many countries today, it is still practised clandestinely in some areas.
Cockfighting was also prevalent in ancient India, China, Persia, and other Eastern countries, and was introduced to Ancient Greece by the Greek general Themistocles around 524-460 BC. It is speculated that the ancient name of the city of Mohenjo-daro in the Indus Valley could have been "Kukkutarma," meaning "the city of the cockerel." The Romans initially despised this "Greek diversion" but eventually adopted it enthusiastically, associating gamecocks with their gods Apollo and Mars. Through Roman conquests and trade, the sport and the birds spread throughout the Roman Empire and beyond.
In Southeast Asia, cockfighting is implicated in the spread of bird flu and is considered a form of fertility worship. In Bali, cockfights, known as tajen or Sabung ayam, are practised as religious purification rituals to expel evil spirits through animal sacrifice.
The global popularity of cockfighting, combined with the ease of keeping and transporting chickens, contributed significantly to the dispersion of chickens worldwide.
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They reached Europe during the Iron Age
Chickens are believed to have originated in Southeast Asia, where they were first domesticated around 8,000 years ago. They are descendants of the red junglefowl, which is native to southwestern China, northern Thailand, and Myanmar, and the Indian subcontinent. Over time, they spread across Southeast and South Asia, interbreeding with local wild species of junglefowl and forming distinct genetic and geographic groups.
Another factor in the dispersal of chickens to Europe was human migration. As people migrated from the Near East and Central Asia into Europe, they brought their domesticated animals with them, including chickens. These birds provided a valuable source of meat and eggs, making them a desirable commodity for travelers and traders. Furthermore, chickens are adaptable and easy to keep, making them well-suited for long journeys and integration into new environments and cuisines.
The specific routes and timing of their arrival in Europe are still subjects of ongoing research and genetic studies. However, it is clear that chickens had reached Europe by the Iron Age and gradually became an integral part of the continent's agricultural and cultural landscape.
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Frequently asked questions
Chickens are originally native to Southeast Asia, specifically Myanmar, Laos, Thailand, and southern China.
Chickens spread to other parts of the world through migration and trade. They were also carried by migrants and traders across Asia and to every continent except Antarctica.
Chickens were first domesticated around 8,000 years ago, although some estimates place this as far back as 10,000 years ago or as recent as 7,000 years ago.
