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The chicken (Gallus gallus domesticus) is a large and round short-winged bird, domesticated from the red junglefowl of Southeast Asia around 8,000 years ago. Most chickens are raised for food, providing meat and eggs ; others are kept as pets [ 1 ] or for cockfighting .
5-2 million years ago: Hominids shift away from the consumption of nuts and berries to begin the consumption of meat. [1] [2]A hearth with cooking utensils. 2.5-1.8 million years ago: The discovery of the use of fire may have created a sense of sharing as a group.
The timeline of the evolutionary history of life represents the current scientific theory outlining the major events during the development of life on planet Earth. Dates in this article are consensus estimates based on scientific evidence , mainly fossils .
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 ...
The domestic chicken is descended primarily from the red junglefowl (Gallus gallus) and is scientifically classified as the same species. [6] The traditional poultry farming view, is stated in Encyclopædia Britannica (2007): "Humans first domesticated chickens of Indian origin for the purpose of cockfighting in Asia, Africa, and Europe.
Poultry was a favorite choice, with the rapid expansion in production, a sharp fall in prices, and widespread acceptance of the many ways to serve chicken. [30] The Green Revolution in the 1950s and 1960s was a technological breakthrough in plant productivity that increased agricultural production worldwide, particularly in the developing world.
The evolution of birds began in the Jurassic Period, with the earliest birds derived from a clade of theropod dinosaurs named Paraves. [1] Birds are categorized as a biological class, Aves. For more than a century, the small theropod dinosaur Archaeopteryx lithographica from the Late Jurassic period was considered to have been the earliest bird.
7000 BC – Domestication of cattle and chicken in Mehrgarh, modern day Pakistan. 6800 BC – Rice domesticated in southeast Asia. 6500 BC – Evidence of cattle domestication in Turkey. [2] Some sources say this happened earlier in other parts of the world.