The red junglefowl lives in small mixed flocks during the non-breeding season - summer, autumn and winter (3). These have a hierarchical social system in which there is a 'pecking order' for both males and females (4). In the spring, at the onset of the breeding season, each of the stronger cocks maintains a territory with three to five hens (3). Meanwhile, young cocks live isolated in twos and threes. Studies have shown that the offspring of top roosters are more likely to grow up to be leaders than are those of low-ranking males, and that hierarchy may have a genetic component. Experiments have shown that females have the ability to retain or eject sperm, and that they consistently retain the sperm of the one or two dominant roosters in the group and eject that of all others (9). Hens produce four to seven, typically four to six, eggs per clutch, which are incubated for 18 to 20 days by the female only (2) (4). At twelve weeks of age, the young are chased out of the social group by their mother, and go off to join another group or form their own (4). Red junglefowl forage on the ground for seeds, fruit and insects, using their feet to scratch away the leaf-litter in search of food (5).
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