13 Year Cicada

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13 Year Cicada

Subjects > Animals > Insects > Cicada

See the [Cicada Picture Gallery]. Also more information on Cicadids ...

Question: Why do periodical cicadas emerge only every 13 or 17 years?

Answer:

When cicadas come out of the ground at the same time, this is known as a mass emergence. Experts beleive that these mass emergences in odd-numbered years are apparently a means to avoid being eaten by predators such as birds, thus assuring survival of the cicada species. Since it is more than a decade between emergences, it is difficult for predators to track when the insects will be available. Predators have nothing to eat for several years, and then all of a sudden an enormous number of large insects emerge; there are too many for the local birds to eat.

Other cicada links:

• Common Questions Asked About Cicadas
• How To Eat Cicadas
  • Cicada Recipe
• [How To Prevent Tree Damage By Cicadas]
• Pesticide Risk of Eating Cicadas
• [Everything Insects:Cicadas...] There are different ways to cook cicadas, many of which are outlined in "Cicada-Licious: Cooking and Enjoying Periodical Cicadas," a book written by University ...

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