What is a Chicken? A Look at the Bird We Love to Eat

Farmers have developed numerous breeds and varieties to fulfill commercial requirements. For most of that period, chickens were a common part of the livestock complement of farms and ranches throughout Eurasia and Africa. Chicken domestication likely occurred more than once in Southeast Asia and possibly India over the most recent 7,400 years, and the first domestications may have been for religious reasons or for the raising of fighting birds. Each flock of chickens develops https://krikya-online.com a social hierarchy that determines access to food, nesting sites, mates, and other resources.

• Roosters can usually be differentiated from hens by their striking plumage, marked by long flowing tails and bright pointed feathers on their necks.
• Strongly inbred Langshan chickens display obvious inbreeding depression in reproduction, particularly for traits such as age when the first egg is laid and egg number.
• Certain breeds, such as silkies and many bantam varieties, are generally docile and are often recommended as good pets around children with disabilities.
• The life span of a chicken varies between 5 – 7 years although there have been cases of chickens living 20 years or so.

Animal Names Glossary

Chickens have a communal approach to the incubation of eggs and raising of young. Chickens will sometimes attempt flight simply to explore their surroundings, however, they will especially fly in an attempt to flee when they perceive danger or pursued by a predator. The rooster is larger and more brightly colored than the hen, he also has a larger comb on top of his head. Roosters can usually be differentiated from hens by their striking plumage, marked by long flowing tails and bright pointed feathers on their necks.

Chickens come in various varieties, breeds, classes, and strains. At the end of the incubation period, which is an average of 21 days, the eggs (if fertilized) will hatch and the broody hen will take care of her young. Individual chickens in a flock will dominate others, establishing a ‘pecking order’, with dominant individuals having priority for access to food and nesting locations. Although chickens are flightless birds, they do have a tendency to attempt flight.

Ayam Cemani Chicken Egg Production

Male chickens become cocks or roosters after full maturity. An adult male bird is a cockerel or rooster, while a female adult chicken is called a hen. Besides humans, lots of animals eat chickens as well. The life span of a chicken varies between 5 – 7 years although there have been cases of chickens living 20 years or so. Some breeds, such as the Cochin, Cornish and Silkie, regularly go broody and make excellent mothers. During this time, the newly-hatched chicks live off the egg yolk they absorb just before hatching.

Chickens are gregarious birds and live together as a flock. Chickens have a well-developed gizzard (a part of the stomach that contains tiny stones) that grinds up their food. © 2026 Al-Fatah All Rights Reserved – Powered By Tech Andaz

These chickens may have been introduced during pre-Columbian times to South America via Polynesian seafarers, but this is disputed. Skeletons of birds in the Gallus genus were used as grave goods at the site, confirming domestication. The chicks imprint on the hen and subsequently follow her continually. Eggs of chickens from the high-altitude region of Tibet have special physiological adaptations that result in a higher hatching rate in low oxygen environments. Hens often try to lay in nests that already contain eggs and sometimes move eggs from neighbouring nests into their own. As with all birds, reproduction is controlled by a neuroendocrine system, the Gonadotropin-Releasing Hormone-I neurons in the hypothalamus.

In the UK and Europe, laying hens are then slaughtered and used in processed foods, or sold as ‘soup hens’. Genetic sequencing of chicken bones from archaeological sites in Europe revealed that in the High Middle Ages chickens became less aggressive and began to lay eggs earlier in the breeding season. During the Hellenistic period (4th–2nd centuries BC), in the southern Levant, chickens began to be widely domesticated for food. An early study proposed that a single domestication event of the red junglefowl in present-day Thailand gave rise to the modern chicken. It is estimated that chickens share between 71 and 79% of their genome with red junglefowl.