Related Clues:

• The drill is one to make you yawn, it seems
• The sound of a bird is a bird
• 1 down must have it
• The noise of the century is made for another bird by 14 down
• That's the drill
• You may find the drill is dull
• That's the drill for the insect
• The drill is to make the whole of it, by the sound of it
• One'll make the whole of it, perhaps, however dull one may be
• Not the bird for this bird song
• 'That's the drill to get the whole of it, by the sound of it (5)'
• Foul-sounding bird
• Bird with the sound of another one
• Jackdaw relative
• Magpie cousin