Why are cicadas so noisy?

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Close-up of two 17-year cicadas with black bodies and orange eyes, perched on a branch, with a blurred green and brown background.

Why do some cicadas appear every 17 years?

Why are cicadas so noisy?: Media

The loud buzzing of cicadas is the sound of late summer in many places. But how and why do they do it?

Videos

Close-up of two 17-year cicadas with black bodies and orange eyes, perched on a branch, with a blurred green and brown background.

How Do Cicadas Know When to Go Aboveground?

Learn more about the life cycle of the 17-year cicada.

Video: Encyclopædia Britannica, Inc.

Why do some cicadas appear every 17 years?

Why do some cicadas appear every 17 years?

And how much buzzing will you hear this summer?

Video: Encyclopædia Britannica, Inc.