The species' call is a low, slow "Brawk-Brawk-Brawk". They repeat it many times. For most of the year, they will call while being on top of something that is very high. These include trees and gutters. During mating season, the frogs will call near a place where there is water. They will stay there for a little while or forever. Like many frogs, green tree frogs call to attract a mate. They will also use their call to warn other frogs that they are near. The green tree frog will make a stress call whenever they are in danger.