A chicken is a domesticated subspecies of the red junglefowl, a tropical bird that is almost identical to a chicken. What defines a chicken from other similar species is that they have two wattles and a comb. The two wattles are the two red appendages that hang below its chin and a comb is a red appendage on its head. Many people also get confused with what a male and female chicken is called. A male is called a Rooster or Cock and can be identified by pointed feathers, larger combs and wattles, and a male crows. The female chicken can be identified by rounded feathers and the inability to crow.
The main reason humans have domesticated chickens is that they are easy to control (they can’t fly off into the sky) and the products you gain from raising them are very effective. Chickens that are laying eggs will lay about one egg a day depending on the weather and many other environmental factors. They are also a good source of protein but, due to overbreeding to enhance desired sizes and shapes many chickens that are domesticated to be slaughtered cannot move easily. These factors that inhibit the movement of the chicken can reduce the production of eggs due to environmental stress.