Common green bottle fly males are attracted to wing flashes at about 178 Hz.

For some flies, flight is also a visual language. In experiments filmed at 15,000 frames per second, moving wings produced flashes of reflected light. Male common green bottle flies strongly preferred flashes at 178 Hz, a frequency linked with young females, over frequencies associated with males or older females. Their fast visual system helps turn wingbeats into a signal used during mate recognition.