The mother stays in contact with their infants using high-pitched calls.

It has a short high-pitched call similar to the sound a radar makes.

Additionally, juveniles have been known to beg for food by a series of high-pitched calls.

She approached the house cautiously, trying to hear beyond the high-pitched call of the cicadas.

The bird has a high-pitched call of five to seven notes.

It seemed almost like a form of singing, communicating by a series of high-pitched calls and responses.

This is because of their sharp, high-pitched, and insect-like calls.

Often the female dragged or carried one of the kits, which would give a continuous high-pitched call.

They are also known as squeakers because of their high-pitched calls.

They give a series of high-pitched calls on a single note, and tend not to fear human approach.