(Inside Science) -- When you first hear it, a cicada chorus may sound like simple buzzing. But to a cicada, that cacophony is full of meaning.
There are three species in Brood X, the cohort of 17-year cicadas now emerging in much of the eastern U.S. Members of each species congregate with their own kind and talk to each other with their own species-specific sounds. Males sing to court females and "jam" the songs of other males, while females make clicks with their wings to encourage or repel suitors.
Humans can learn to decode these sounds. John Cooley, a biologist at the University of Connecticut, can speak cicada so well he can seduce insects of either sex. He uses his voice to imitate males and gentle finger snaps to imitate females.