Related Clues:

• Range sounds
• 'Old MacDonald Had a Farm' sounds
• Calls from Bossy
• It's heard from a herd
• Farmyard chorus
• Sounds heard by 57-Across
• What's heard from a herd
• Bovine blurts
• Herd comments
• Dairy sounds
• Bossy comments
• Lows in a field
• The lowest points
• Seems the drains are broken down there
• Reacts to milking, perhaps