Chicken Wikipedia
Some breeds have a mutation that causes extra feathering under the face, giving the appearance of a beard. Adult chickens of both sexes have a fleshy crest on their heads called a comb or cockscomb, and hanging flaps of skin on either side under their beaks called wattles; combs and wattles are more prominent in males. Modern varieties however grow much faster; by day 35 a Ross 708 broiler may weigh 1.8 kg (4.0 lb) as against the 1.05 kg (2.3 lb) of a heritage chicken of the same age. Newly hatched chicks of both modern and heritage varieties weigh the same, about 37 g (1.3 oz). Chicken can mean a chick, and this was historically the meaning of the word chicken, as in William Shakespeare’s play Macbeth, where Macduff laments the death krikya-online.com/ of “all my pretty chickens and their dam”.
Domestication
All chickens originating from a specific place and having similar characteristics belong to the same family. All chickens are members of the kingdom Animalia. Chicken wattles differ in size since some chickens have bigger wattles than others. Some breeds have side-by-side combs, while others have single combs. A chicken’s physical characteristics differ by breed.
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Inbreeding of White Leghorn chickens tends to cause inbreeding depression expressed as reduced egg number and delayed sexual maturity. Wild junglefowl can fly, whereas domestic chickens and their flight muscles are too heavy to allow them to fly more than a short distance. The chicken is undoubtedly the most common domesticated fowl.
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.
- Chickens belong to different breeds, classes, and varieties.
- Altercations, however, may also include pummeling with wings and scratching with claws.
- Chickens have a communal approach to the incubation of eggs and raising of young.
- It comes in two varieties, the rose comb and the single comb.
What is a Chickens?
After 12 months of laying, the commercial hen’s egg-laying ability declines to the point where the flock is commercially unviable. Genomic studies estimated that the chicken was domesticated 8,000 years ago in Southeast Asia and spread to China and India 2,000 to 3,000 years later. Fertile chicken eggs hatch at the end of the incubation period, about 21 days; the chick uses its egg tooth to break out of the shell. Individual chickens dominate others, establishing a pecking order; dominant individuals take priority for access to food and nest sites.
Chickens are capable of mobbing and killing a weak or inexperienced predator, such as a young fox. While the origin is Germanic, it is unclear exactly where the word came from, although it could ultimately have come from an imitation of the sound a chicken makes. The word chicken comes from Old English cicen (pronounced essentially the same as in Modern English).
Some common chicken strains include star cross white. Poultry experts also classify chickens into strains. The Yokohama breed is an Asiatic breed that comes in white and Red shoulder varieties. The English chicken class consists of chickens originating from the UK and Australia.
Chickens belonging to the same age cohort and sex are often kept together in industrial production settings. Altercations, however, may also include pummeling with wings and scratching with claws. A flock usually includes one dominant adult male, a few subdominant males, and two or more females that are carefully watched over by the dominant male. Chicks are born covered in down, but they mature quickly, becoming fully feathered after four to five weeks.