Possible Clues:

• Roll contains zero chicken
• Bird in kangaroo's territory
• Work schedule covers old boss of coop?
• Schedule disrupted by old male calling at first light
• Bird shown as 'duck' in list
• Male bird caught by kangaroos, terrified!
• Roll contains old chicken
• List including duck and fowl
• First animal up on the farm, usually
• Fowl with a comb