Fireflies: Nature's Baffling Blinkers

Have you ever wondered how fireflies twinkle and blink on lovely summer nights? Join Jessi and Squeaks at the fort to learn their secret!
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SOURCES:
http://www.firefly.org/
http://animals.nationalgeographic.com/animals/bugs/firefly/
http://www.scientificamerican.com/article/how-and-why-do-fireflies/