Firefly Synchrony Explained

I've seen it. Now researchers explain the reason for firefly synchrony.

Sex, of course. "Females responded to synchronous flashes about 82 percent of the time, and to out-of-sync flashes less than 10 percent of the time, the study found."

"Further study could...shed light on how the brains of fireflies and other animals process information.

"“The fireflies have to count, possibly measure intervals...and the question is, How do you wire neurons together to be able to do that?”"