The chicken comes from a descendant of one of the subspecies of a forest chicken known as red jungle chicken or bangkiwa chicken (bankiva fowl). Chickens can generally be crossed with close relatives such as green forest chickens that produce sterile hybrids whose males are known as bekisar chickens, Chickens including animals that easily adapt to any place, provided the availability of food is abundant. Chickens that have been domesticated today are easy to tame so as to facilitate the maintenance. The unique feature of chickens is in their gynecological system regulated by the hormonal system. If there is a disruption in the physiological function of the body, the hen can change sex into male because the adult chicken still has a dormant ovotestis (immobile) and at any time can be active again
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