Other calls include rasping croaks, when alarmed, and hisses. Series of descending croaks, screams and grunts. Birds may switch from croaks to hoots seamlessly. It also produces hoarse croaks and "arh, arh, arh". These can include low volume squeaks, grunts and croaks. When grazing, they make various sounds, such as brief bellows, grunts, honks, and croaks. In the nesting colonies, adults communicate with croaks, grunts or rattles. The voice is described as guttural croaks mixed with the sound of frog-call. They communicate using a wide range of vocalizations, including squeaks, clicks and even croaks. Otherwise, female vocalizations are limited to quiet croaks given when feeding or resting. Its call is a series of frog-like croaks, usually uttered in flight. The petrel will occasionally utter other croaks and sounds while foraging at sea. They advertise their presence by calling, often alternating their croaks with neighbouring frogs. Asher croaks out that Cerberus is going to activate. She doesn't get along well with her peers and suddenly starts having tics and croaks.