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An ant mill is an observed phenomenon in which a group of army ants, which are blind, are separated from the main foraging party, lose the pheromone track and begin to follow one another, forming a continuously rotating circle. The ants will eventually die of exhaustion. This has been reproduced in laboratories and the behaviour has also been produced in ant colony simulations. This phenomenon is a side effect of the self-organizing structure of ant colonies. Each ant follows the ant in front of it, and this will work until something goes wrong and an ant mill forms. An ant mill was first described by William Beebe in 1921 who observed a mill 1,200 feet (365 m) in circumference.〔William Beebe, ''Edge of the Jungle'' (New York, New York: Henry Holt and Co., 1921), (pp. 291-294. )〕 It took each ant 2.5 hours to make one revolution.〔Wisdom of the Crowds by James Surowiecki〕 Similar phenomena have been noted in processionary caterpillars and fish. == See also == * Information cascade * Feedback loop * Stigmergy * Woozle effect 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ant mill」の詳細全文を読む スポンサード リンク
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