Possible Clues:

• Poe visitor
• Eat greedily, being Edgar Allan's bird
• "The ___" (Poe poem)
• Bird lacking courage when head is chopped off
• Invisible barriers causing some amusement
• Bird seen on totem poles
• ''Quoth the ___, 'Nevermore'''
• 'That's So __'
• Bird with hoarse, croaking cry
• Behead chicken or another bird