Possible Clues:

• Bird, one poking around gobbling crumbs ultimately
• Chicken or duck in a roll
• One among poultry list including duck
• One might crow when nothing appears in the duty list
• Cock robin's head, eyes, and most of back
• Bird runs with Bertie when topless?
• Male bird finds duty list involving duck
• Domestic male fowl
• Early riser in a barnyard
• List including duck and domestic fowl