Related Clues:

• They may be heard, by the sound of them (6)
• Herd may be heard
• May be herd or heard
• You've heard of them, by the sound of it
• One will have heard the herd
• Heard the sound of them
• Not making Yeats' ''low sounds by the shore''
• Heard the low sound they make
• Heard the beastly sound of them
• Heard of the sound of them? It's low (6)
• Heard them? They sound low
• Listened to the sound of the beasts there
• Herd to heard to be low
• The herd may be heard
• Border collie's concern