Possible Clues:

• Mr Fawlty familiarly adopting a South African title
• Sheep farm sounds
• What lambs' conversations are full of?
• Neighs : horses :: ___ : sheep
• What do ewe say?
• Merino sounds
• Sounds from sheep
• Sheep chatter
• Sounds before 'Black sheep, have you any wool?'
• Sheeps' chatter