Related Clues:

• One has a big bill for flying
• Sounds as if a brace of them is able to make one of Big Bill
• For one place in the air it's quite a mouthful
• Sounds as if a brace of such a bird might be only one
• Sounds as if a brace of such birds is only able to be one of them
• A brace of such, by the sound of it, can be only the one bird
• Big Bill is fly enough for this
• One bird able to make one brace
• One such bird is able to make a brace, by the sound of it
• Sounds as if a brace of this can be only one bird
• By the sound of it, one brace can be one bird
• Thus, by the sound of it, a brace can be only one bird
• One faces a huge bill
• Sounds as if a brace of this can be able to be only one bird
• 'Is a brace able to be only one bird, by the sound of it? (6)'