That cricket sound you hear on trees usually comes from insects like crickets, cicadas, or katydids. Crickets – They make chirping sounds by rubbing their wings together (called stridulation). You’ll often hear them at night. Cicadas – Common in trees during the day. They produce a loud buzzing or clicking sound using special membranes on their abdomen called tymbals. Katydids – Related to crickets and grasshoppers, they create a more raspy or clicky sound, often from trees and bushes at night.