The wild sounds

Cicada, Jefferson County, Kentucky

The biophony includes the sounds that cicadas make.  There is something to be learned in absorbing the many parts to their sounds.  There are cicadas that emerge after a thirteen year time and cicadas that emerge after a seventeen year time.  The adult cicadas commonly heard on summer nights are not these long time silent cicadas but are cicadas that emerge almost every year.  These cicadas are called annual cicadas.  These cicadas have a life of two to five years.  Their sounds can be very intense.