13 Year Cicadas Return on newsfeed - The 13 year old cicadas are invading middle Tennessee later this month, which after the recent flooding of the Mississippi, must have residents wondering if the Christian group that believes May 21st is Judgment Day was actually dead on. This news makes it sounds like Tennessee is just a volcano eruption away from a “doomsday hat trick.” Here are 3 facts about the cicada you probably didn’t know. They have bulging eyes and bright coloration. You can find up to 1 million of them on a single acre of land. And only the males sing. Overall, the cicadas are harmless but just really annoying. I think of them a lot like rapper Flava Flave.