Possible Clues:

• Singer allowed to keep pub
• Allow it to fly about the hotel
• Bird's heavy defeat overturned
• There's nothing up to catch it, so allow it to fly around the hotel
• Bird left in mesh
• Impressive result to pick up a sweet-sounding bird
• Finch of heaths and farmland
• Singer allowed out of hotel
• There's nothing back to the trap - only one bird
• Brown-gray kind of finch