The domestic chicken belongs to the pheasant family, the genus Proto-chicken, a subspecies that has been domesticated by people. Domestic chickens were domesticated earlier to provide excellent animal protein foods that are easily accessible to humans. It is the largest number of livestock and poultry raised, all over the world. In 2011, there were estimated to be more than 19 billion domestic chickens worldwide, more than all other birds combined.
According to historical research and a large number of ancient cultural relics, China's domestic chicken has its own birthplace, and the history of taming is as long as India.
The genus is distributed in southern China, indochina, India and other places. There are four kinds of original chickens, namely original chicken, black-tailed original chicken, gray original chicken and green original chicken. Among them, the original chicken is the ancestor of the modern domestic chicken. There are four subspecies of the original chicken: Hainan native chicken, Yunnan original chicken, Javan original chicken, and Indian original chicken.
Let's first look at these four subspecies of the original chicken, that is, the wild relatives closest to the domestic chicken. Since the appearance characteristics of males are more obvious than those of females, this article uses male pictures.
↑ Hainan raw chicken
Originated in Hainan, Guangxi, Yunnan, Vietnam and other places.
↑ Southern Yunnan original chicken
Originated in Yunnan, China, Indochina Peninsula, Malay Peninsula and other places
↑ Javanese raw chicken
Native to the Indonesian island of Java
↑ Indian raw chicken
Native to northwestern India
Then let's take a look at what the other three wild native chickens look like in the dense jungle.
↑ Black-tailed original chicken
Also known as the Sri Lankan raw chicken, it is an endemic species in Sri Lanka. It is also the national bird of the country
↑ Grey Chicken
Native to India, it also retains the habit of flying to trees to roost and escape predators
↑ Green Chicken
It is native to Bali, Indonesia, Lombok and Java
There are many kinds of domestic chickens bred from the original chickens, such as Laihang chicken, Bai Rock, Nine Pounds Yellow, Australian Black... It is estimated that there are hundreds of species.
Dna mutations in the domestication process of the original chickens change their hormone levels, making the mating period of the domestic chickens more frequent, so that they can lay a large number of eggs. Isn't it more tragic?