Not a breath of wind could be heard, nor a sheep bleating from the numerous herds, nor a rustle from the strong trees, nor a human sound.
en.wikipedia.org The basic actions are stand/lie down, bleat, listen, jump, and rub a tree.
en.wikipedia.org At least 10 distinct vocalizations have been identified: snorting, honking, bleating, roaring, squeak-panting, moo-grunting, shrieking, groaning, rumbling and humphing.
en.wikipedia.org Apart from contact communication, bleating may signal distress, frustration or impatience; however, sheep are usually silent when in pain.
en.wikipedia.org