Tons of Grasshoppers are Chirping in the Trees

Who is making these sounds? What kind of insects are in the trees? You can hear chirping of tons of grasshoppers and other insects in Tbilisi, Georgia. Sometimes they are falling from the trees and are in the ground trying to understand what happened. Beautiful Georgian trees give a lot of shadow to the streets. Streets are very hot in Tbilisi, but grasshoppers live their life at full speed