The red junglefowl is thought to be modern ancestor of the domestic chicken. It lays two clutches of 4 - 7 eggs a year (8 - 14 eggs per year). The domestic chicken was already noticed for its egg laying potential by 1,500 BC, and was at least once referred to as the "bird which gives birth every day". Today egg laying chickens can produce upwards of 300 eggs per year, with the record standing at 371. After a year of egg laying, the quality and yield of eggs begins falling. At this point chickens can be slaughtered for food, or they can be starved for 1 to 2 weeks, which causes them to lose their feathers and begin a second egg-laying cycle. This practice is called forced moulting, and is banned in the EU, but widespread in the US.
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